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[wine.git] / dlls / ole32 / compobj.c

/*
 *      COMPOBJ library
 *
 *      Copyright 1995  Martin von Loewis
 *      Copyright 1998  Justin Bradford
 *      Copyright 1999  Francis Beaudet
 *      Copyright 1999  Sylvain St-Germain
 *      Copyright 2002  Marcus Meissner
 *      Copyright 2004  Mike Hearn
 *      Copyright 2005-2006 Robert Shearman (for CodeWeavers)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 *
 * Note
 * 1. COINIT_MULTITHREADED is 0; it is the lack of COINIT_APARTMENTTHREADED
 *    Therefore do not test against COINIT_MULTITHREADED
 *
 * TODO list:           (items bunched together depend on each other)
 *
 *   - Implement the service control manager (in rpcss) to keep track
 *     of registered class objects: ISCM::ServerRegisterClsid et al
 *   - Implement the OXID resolver so we don't need magic endpoint names for
 *     clients and servers to meet up
 *
 */

#include "config.h"

#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>

#define COBJMACROS
#define NONAMELESSUNION

#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winreg.h"
#include "winuser.h"
#define USE_COM_CONTEXT_DEF
#include "objbase.h"
#include "ole2.h"
#include "ole2ver.h"
#include "ctxtcall.h"
#include "dde.h"
#include "servprov.h"

#include "initguid.h"
#include "compobj_private.h"
#include "moniker.h"

#include "wine/unicode.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(ole);

#define ARRAYSIZE(array) (sizeof(array)/sizeof((array)[0]))

/****************************************************************************
 * This section defines variables internal to the COM module.
 */

static APARTMENT *MTA; /* protected by csApartment */
static APARTMENT *MainApartment; /* the first STA apartment */
static struct list apts = LIST_INIT( apts ); /* protected by csApartment */

static CRITICAL_SECTION csApartment;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
    0, 0, &csApartment,
    { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
      0, 0, { (DWORD_PTR)(__FILE__ ": csApartment") }
};
static CRITICAL_SECTION csApartment = { &critsect_debug, -1, 0, 0, 0, 0 };

enum comclass_threadingmodel
{
    ThreadingModel_Apartment = 1,
    ThreadingModel_Free      = 2,
    ThreadingModel_No        = 3,
    ThreadingModel_Both      = 4,
    ThreadingModel_Neutral   = 5
};

enum comclass_miscfields
{
    MiscStatus          = 1,
    MiscStatusIcon      = 2,
    MiscStatusContent   = 4,
    MiscStatusThumbnail = 8,
    MiscStatusDocPrint  = 16
};

struct comclassredirect_data
{
    ULONG size;
    BYTE  res;
    BYTE  miscmask;
    BYTE  res1[2];
    DWORD model;
    GUID  clsid;
    GUID  alias;
    GUID  clsid2;
    GUID  tlbid;
    ULONG name_len;
    ULONG name_offset;
    ULONG progid_len;
    ULONG progid_offset;
    ULONG clrdata_len;
    ULONG clrdata_offset;
    DWORD miscstatus;
    DWORD miscstatuscontent;
    DWORD miscstatusthumbnail;
    DWORD miscstatusicon;
    DWORD miscstatusdocprint;
};

struct ifacepsredirect_data
{
    ULONG size;
    DWORD mask;
    GUID  iid;
    ULONG nummethods;
    GUID  tlbid;
    GUID  base;
    ULONG name_len;
    ULONG name_offset;
};

struct progidredirect_data
{
    ULONG size;
    DWORD reserved;
    ULONG clsid_offset;
};

struct class_reg_data
{
    union
    {
        struct
        {
            struct comclassredirect_data *data;
            void *section;
            HANDLE hactctx;
        } actctx;
        HKEY hkey;
    } u;
    BOOL hkey;
};

struct registered_psclsid
{
    struct list entry;
    IID iid;
    CLSID clsid;
};

static struct list registered_psclsid_list = LIST_INIT(registered_psclsid_list);

static CRITICAL_SECTION cs_registered_psclsid_list;
static CRITICAL_SECTION_DEBUG psclsid_cs_debug =
{
    0, 0, &cs_registered_psclsid_list,
    { &psclsid_cs_debug.ProcessLocksList, &psclsid_cs_debug.ProcessLocksList },
      0, 0, { (DWORD_PTR)(__FILE__ ": cs_registered_psclsid_list") }
};
static CRITICAL_SECTION cs_registered_psclsid_list = { &psclsid_cs_debug, -1, 0, 0, 0, 0 };

/*
 * This is a marshallable object exposing registered local servers.
 * IServiceProvider is used only because it happens meet requirements
 * and already has proxy/stub code. If more functionality is needed,
 * a custom interface may be used instead.
 */
struct LocalServer
{
    IServiceProvider IServiceProvider_iface;
    LONG ref;
    APARTMENT *apt;
    IStream *marshal_stream;
};

/*
 * This lock count counts the number of times CoInitialize is called. It is
 * decreased every time CoUninitialize is called. When it hits 0, the COM
 * libraries are freed
 */
static LONG s_COMLockCount = 0;
/* Reference count used by CoAddRefServerProcess/CoReleaseServerProcess */
static LONG s_COMServerProcessReferences = 0;

/*
 * This linked list contains the list of registered class objects. These
 * are mostly used to register the factories for out-of-proc servers of OLE
 * objects.
 *
 * TODO: Make this data structure aware of inter-process communication. This
 *       means that parts of this will be exported to rpcss.
 */
typedef struct tagRegisteredClass
{
  struct list entry;
  CLSID     classIdentifier;
  OXID      apartment_id;
  LPUNKNOWN classObject;
  DWORD     runContext;
  DWORD     connectFlags;
  DWORD     dwCookie;
  void     *RpcRegistration;
} RegisteredClass;

static struct list RegisteredClassList = LIST_INIT(RegisteredClassList);

static CRITICAL_SECTION csRegisteredClassList;
static CRITICAL_SECTION_DEBUG class_cs_debug =
{
    0, 0, &csRegisteredClassList,
    { &class_cs_debug.ProcessLocksList, &class_cs_debug.ProcessLocksList },
      0, 0, { (DWORD_PTR)(__FILE__ ": csRegisteredClassList") }
};
static CRITICAL_SECTION csRegisteredClassList = { &class_cs_debug, -1, 0, 0, 0, 0 };

static inline enum comclass_miscfields dvaspect_to_miscfields(DWORD aspect)
{
    switch (aspect)
    {
    case DVASPECT_CONTENT:
        return MiscStatusContent;
    case DVASPECT_THUMBNAIL:
        return MiscStatusThumbnail;
    case DVASPECT_ICON:
        return MiscStatusIcon;
    case DVASPECT_DOCPRINT:
        return MiscStatusDocPrint;
    default:
        return MiscStatus;
    };
}

BOOL actctx_get_miscstatus(const CLSID *clsid, DWORD aspect, DWORD *status)
{
    ACTCTX_SECTION_KEYED_DATA data;

    data.cbSize = sizeof(data);
    if (FindActCtxSectionGuid(0, NULL, ACTIVATION_CONTEXT_SECTION_COM_SERVER_REDIRECTION,
                              clsid, &data))
    {
        struct comclassredirect_data *comclass = (struct comclassredirect_data*)data.lpData;
        enum comclass_miscfields misc = dvaspect_to_miscfields(aspect);

        if (!(comclass->miscmask & misc))
        {
            if (!(comclass->miscmask & MiscStatus))
            {
                *status = 0;
                return TRUE;
            }
            misc = MiscStatus;
        }

        switch (misc)
        {
        case MiscStatus:
            *status = comclass->miscstatus;
            break;
        case MiscStatusIcon:
            *status = comclass->miscstatusicon;
            break;
        case MiscStatusContent:
            *status = comclass->miscstatuscontent;
            break;
        case MiscStatusThumbnail:
            *status = comclass->miscstatusthumbnail;
            break;
        case MiscStatusDocPrint:
            *status = comclass->miscstatusdocprint;
            break;
        default:
           ;
        };

        return TRUE;
    }
    else
        return FALSE;
}

/* wrapper for NtCreateKey that creates the key recursively if necessary */
static NTSTATUS create_key( HKEY *retkey, ACCESS_MASK access, OBJECT_ATTRIBUTES *attr )
{
    NTSTATUS status = NtCreateKey( (HANDLE *)retkey, access, attr, 0, NULL, 0, NULL );

    if (status == STATUS_OBJECT_NAME_NOT_FOUND)
    {
        HANDLE subkey, root = attr->RootDirectory;
        WCHAR *buffer = attr->ObjectName->Buffer;
        DWORD attrs, pos = 0, i = 0, len = attr->ObjectName->Length / sizeof(WCHAR);
        UNICODE_STRING str;

        while (i < len && buffer[i] != '\\') i++;
        if (i == len) return status;

        attrs = attr->Attributes;
        attr->ObjectName = &str;

        while (i < len)
        {
            str.Buffer = buffer + pos;
            str.Length = (i - pos) * sizeof(WCHAR);
            status = NtCreateKey( &subkey, access, attr, 0, NULL, 0, NULL );
            if (attr->RootDirectory != root) NtClose( attr->RootDirectory );
            if (status) return status;
            attr->RootDirectory = subkey;
            while (i < len && buffer[i] == '\\') i++;
            pos = i;
            while (i < len && buffer[i] != '\\') i++;
        }
        str.Buffer = buffer + pos;
        str.Length = (i - pos) * sizeof(WCHAR);
        attr->Attributes = attrs;
        status = NtCreateKey( (PHANDLE)retkey, access, attr, 0, NULL, 0, NULL );
        if (attr->RootDirectory != root) NtClose( attr->RootDirectory );
    }
    return status;
}

static const WCHAR classes_rootW[] =
    {'\\','R','e','g','i','s','t','r','y','\\','M','a','c','h','i','n','e',
     '\\','S','o','f','t','w','a','r','e','\\','C','l','a','s','s','e','s',0};

static HKEY classes_root_hkey;

/* create the special HKEY_CLASSES_ROOT key */
static HKEY create_classes_root_hkey(DWORD access)
{
    HKEY hkey, ret = 0;
    OBJECT_ATTRIBUTES attr;
    UNICODE_STRING name;

    attr.Length = sizeof(attr);
    attr.RootDirectory = 0;
    attr.ObjectName = &name;
    attr.Attributes = 0;
    attr.SecurityDescriptor = NULL;
    attr.SecurityQualityOfService = NULL;
    RtlInitUnicodeString( &name, classes_rootW );
    if (create_key( &hkey, access, &attr )) return 0;
    TRACE( "%s -> %p\n", debugstr_w(attr.ObjectName->Buffer), hkey );

    if (!(access & KEY_WOW64_64KEY))
    {
        if (!(ret = InterlockedCompareExchangePointer( (void **)&classes_root_hkey, hkey, 0 )))
            ret = hkey;
        else
            NtClose( hkey );  /* somebody beat us to it */
    }
    else
        ret = hkey;
    return ret;
}

/* map the hkey from special root to normal key if necessary */
static inline HKEY get_classes_root_hkey( HKEY hkey, REGSAM access )
{
    HKEY ret = hkey;
    const BOOL is_win64 = sizeof(void*) > sizeof(int);
    const BOOL force_wow32 = is_win64 && (access & KEY_WOW64_32KEY);

    if (hkey == HKEY_CLASSES_ROOT &&
        ((access & KEY_WOW64_64KEY) || !(ret = classes_root_hkey)))
        ret = create_classes_root_hkey(MAXIMUM_ALLOWED | (access & KEY_WOW64_64KEY));
    if (force_wow32 && ret && ret == classes_root_hkey)
    {
        static const WCHAR wow6432nodeW[] = {'W','o','w','6','4','3','2','N','o','d','e',0};
        access &= ~KEY_WOW64_32KEY;
        if (create_classes_key(classes_root_hkey, wow6432nodeW, access, &hkey))
            return 0;
        ret = hkey;
    }

    return ret;
}

LSTATUS create_classes_key( HKEY hkey, const WCHAR *name, REGSAM access, HKEY *retkey )
{
    OBJECT_ATTRIBUTES attr;
    UNICODE_STRING nameW;

    if (!(hkey = get_classes_root_hkey( hkey, access ))) return ERROR_INVALID_HANDLE;

    attr.Length = sizeof(attr);
    attr.RootDirectory = hkey;
    attr.ObjectName = &nameW;
    attr.Attributes = 0;
    attr.SecurityDescriptor = NULL;
    attr.SecurityQualityOfService = NULL;
    RtlInitUnicodeString( &nameW, name );

    return RtlNtStatusToDosError( create_key( retkey, access, &attr ) );
}

LSTATUS open_classes_key( HKEY hkey, const WCHAR *name, REGSAM access, HKEY *retkey )
{
    OBJECT_ATTRIBUTES attr;
    UNICODE_STRING nameW;

    if (!(hkey = get_classes_root_hkey( hkey, access ))) return ERROR_INVALID_HANDLE;

    attr.Length = sizeof(attr);
    attr.RootDirectory = hkey;
    attr.ObjectName = &nameW;
    attr.Attributes = 0;
    attr.SecurityDescriptor = NULL;
    attr.SecurityQualityOfService = NULL;
    RtlInitUnicodeString( &nameW, name );

    return RtlNtStatusToDosError( NtOpenKey( (HANDLE *)retkey, access, &attr ) );
}

/*****************************************************************************
 * This section contains OpenDllList definitions
 *
 * The OpenDllList contains only handles of dll loaded by CoGetClassObject or
 * other functions that do LoadLibrary _without_ giving back a HMODULE.
 * Without this list these handles would never be freed.
 *
 * FIXME: a DLL that says OK when asked for unloading is unloaded in the
 * next unload-call but not before 600 sec.
 */

typedef HRESULT (CALLBACK *DllGetClassObjectFunc)(REFCLSID clsid, REFIID iid, LPVOID *ppv);
typedef HRESULT (WINAPI *DllCanUnloadNowFunc)(void);

typedef struct tagOpenDll
{
  LONG refs;
  LPWSTR library_name;
  HANDLE library;
  DllGetClassObjectFunc DllGetClassObject;
  DllCanUnloadNowFunc DllCanUnloadNow;
  struct list entry;
} OpenDll;

static struct list openDllList = LIST_INIT(openDllList);

static CRITICAL_SECTION csOpenDllList;
static CRITICAL_SECTION_DEBUG dll_cs_debug =
{
    0, 0, &csOpenDllList,
    { &dll_cs_debug.ProcessLocksList, &dll_cs_debug.ProcessLocksList },
      0, 0, { (DWORD_PTR)(__FILE__ ": csOpenDllList") }
};
static CRITICAL_SECTION csOpenDllList = { &dll_cs_debug, -1, 0, 0, 0, 0 };

struct apartment_loaded_dll
{
    struct list entry;
    OpenDll *dll;
    DWORD unload_time;
    BOOL multi_threaded;
};

static const WCHAR wszAptWinClass[] = {'O','l','e','M','a','i','n','T','h','r','e','a','d','W','n','d','C','l','a','s','s',0};

/*****************************************************************************
 * This section contains OpenDllList implementation
 */

static OpenDll *COMPOBJ_DllList_Get(LPCWSTR library_name)
{
    OpenDll *ptr;
    OpenDll *ret = NULL;
    EnterCriticalSection(&csOpenDllList);
    LIST_FOR_EACH_ENTRY(ptr, &openDllList, OpenDll, entry)
    {
        if (!strcmpiW(library_name, ptr->library_name) &&
            (InterlockedIncrement(&ptr->refs) != 1) /* entry is being destroy if == 1 */)
        {
            ret = ptr;
            break;
        }
    }
    LeaveCriticalSection(&csOpenDllList);
    return ret;
}

/* caller must ensure that library_name is not already in the open dll list */
static HRESULT COMPOBJ_DllList_Add(LPCWSTR library_name, OpenDll **ret)
{
    OpenDll *entry;
    int len;
    HRESULT hr = S_OK;
    HANDLE hLibrary;
    DllCanUnloadNowFunc DllCanUnloadNow;
    DllGetClassObjectFunc DllGetClassObject;

    TRACE("%s\n", debugstr_w(library_name));

    *ret = COMPOBJ_DllList_Get(library_name);
    if (*ret) return S_OK;

    /* do this outside the csOpenDllList to avoid creating a lock dependency on
     * the loader lock */
    hLibrary = LoadLibraryExW(library_name, 0, LOAD_WITH_ALTERED_SEARCH_PATH);
    if (!hLibrary)
    {
        ERR("couldn't load in-process dll %s\n", debugstr_w(library_name));
        /* failure: DLL could not be loaded */
        return E_ACCESSDENIED; /* FIXME: or should this be CO_E_DLLNOTFOUND? */
    }

    DllCanUnloadNow = (void *)GetProcAddress(hLibrary, "DllCanUnloadNow");
    /* Note: failing to find DllCanUnloadNow is not a failure */
    DllGetClassObject = (void *)GetProcAddress(hLibrary, "DllGetClassObject");
    if (!DllGetClassObject)
    {
        /* failure: the dll did not export DllGetClassObject */
        ERR("couldn't find function DllGetClassObject in %s\n", debugstr_w(library_name));
        FreeLibrary(hLibrary);
        return CO_E_DLLNOTFOUND;
    }

    EnterCriticalSection( &csOpenDllList );

    *ret = COMPOBJ_DllList_Get(library_name);
    if (*ret)
    {
        /* another caller to this function already added the dll while we
         * weren't in the critical section */
        FreeLibrary(hLibrary);
    }
    else
    {
        len = strlenW(library_name);
        entry = HeapAlloc(GetProcessHeap(),0, sizeof(OpenDll));
        if (entry)
            entry->library_name = HeapAlloc(GetProcessHeap(), 0, (len + 1)*sizeof(WCHAR));
        if (entry && entry->library_name)
        {
            memcpy(entry->library_name, library_name, (len + 1)*sizeof(WCHAR));
            entry->library = hLibrary;
            entry->refs = 1;
            entry->DllCanUnloadNow = DllCanUnloadNow;
            entry->DllGetClassObject = DllGetClassObject;
            list_add_tail(&openDllList, &entry->entry);
            *ret = entry;
        }
        else
        {
            HeapFree(GetProcessHeap(), 0, entry);
            hr = E_OUTOFMEMORY;
            FreeLibrary(hLibrary);
        }
    }

    LeaveCriticalSection( &csOpenDllList );

    return hr;
}

/* pass FALSE for free_entry to release a reference without destroying the
 * entry if it reaches zero or TRUE otherwise */
static void COMPOBJ_DllList_ReleaseRef(OpenDll *entry, BOOL free_entry)
{
    if (!InterlockedDecrement(&entry->refs) && free_entry)
    {
        EnterCriticalSection(&csOpenDllList);
        list_remove(&entry->entry);
        LeaveCriticalSection(&csOpenDllList);

        TRACE("freeing %p\n", entry->library);
        FreeLibrary(entry->library);

        HeapFree(GetProcessHeap(), 0, entry->library_name);
        HeapFree(GetProcessHeap(), 0, entry);
    }
}

/* frees memory associated with active dll list */
static void COMPOBJ_DllList_Free(void)
{
    OpenDll *entry, *cursor2;
    EnterCriticalSection(&csOpenDllList);
    LIST_FOR_EACH_ENTRY_SAFE(entry, cursor2, &openDllList, OpenDll, entry)
    {
        list_remove(&entry->entry);

        HeapFree(GetProcessHeap(), 0, entry->library_name);
        HeapFree(GetProcessHeap(), 0, entry);
    }
    LeaveCriticalSection(&csOpenDllList);
    DeleteCriticalSection(&csOpenDllList);
}

/******************************************************************************
 * Manage apartments.
 */

static DWORD apartment_addref(struct apartment *apt)
{
    DWORD refs = InterlockedIncrement(&apt->refs);
    TRACE("%s: before = %d\n", wine_dbgstr_longlong(apt->oxid), refs - 1);
    return refs;
}

/* allocates memory and fills in the necessary fields for a new apartment
 * object. must be called inside apartment cs */
static APARTMENT *apartment_construct(DWORD model)
{
    APARTMENT *apt;

    TRACE("creating new apartment, model=%d\n", model);

    apt = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*apt));
    apt->tid = GetCurrentThreadId();

    list_init(&apt->proxies);
    list_init(&apt->stubmgrs);
    list_init(&apt->loaded_dlls);
    apt->ipidc = 0;
    apt->refs = 1;
    apt->remunk_exported = FALSE;
    apt->oidc = 1;
    InitializeCriticalSection(&apt->cs);
    DEBUG_SET_CRITSEC_NAME(&apt->cs, "apartment");

    apt->multi_threaded = !(model & COINIT_APARTMENTTHREADED);

    if (apt->multi_threaded)
    {
        /* FIXME: should be randomly generated by in an RPC call to rpcss */
        apt->oxid = ((OXID)GetCurrentProcessId() << 32) | 0xcafe;
    }
    else
    {
        /* FIXME: should be randomly generated by in an RPC call to rpcss */
        apt->oxid = ((OXID)GetCurrentProcessId() << 32) | GetCurrentThreadId();
    }

    TRACE("Created apartment on OXID %s\n", wine_dbgstr_longlong(apt->oxid));

    list_add_head(&apts, &apt->entry);

    return apt;
}

/* gets and existing apartment if one exists or otherwise creates an apartment
 * structure which stores OLE apartment-local information and stores a pointer
 * to it in the thread-local storage */
static APARTMENT *apartment_get_or_create(DWORD model)
{
    APARTMENT *apt = COM_CurrentApt();

    if (!apt)
    {
        if (model & COINIT_APARTMENTTHREADED)
        {
            EnterCriticalSection(&csApartment);

            apt = apartment_construct(model);
            if (!MainApartment)
            {
                MainApartment = apt;
                apt->main = TRUE;
                TRACE("Created main-threaded apartment with OXID %s\n", wine_dbgstr_longlong(apt->oxid));
            }

            LeaveCriticalSection(&csApartment);

            if (apt->main)
                apartment_createwindowifneeded(apt);
        }
        else
        {
            EnterCriticalSection(&csApartment);

            /* The multi-threaded apartment (MTA) contains zero or more threads interacting
             * with free threaded (ie thread safe) COM objects. There is only ever one MTA
             * in a process */
            if (MTA)
            {
                TRACE("entering the multithreaded apartment %s\n", wine_dbgstr_longlong(MTA->oxid));
                apartment_addref(MTA);
            }
            else
                MTA = apartment_construct(model);

            apt = MTA;

            LeaveCriticalSection(&csApartment);
        }
        COM_CurrentInfo()->apt = apt;
    }

    return apt;
}

static inline BOOL apartment_is_model(const APARTMENT *apt, DWORD model)
{
    return (apt->multi_threaded == !(model & COINIT_APARTMENTTHREADED));
}

static void COM_RevokeRegisteredClassObject(RegisteredClass *curClass)
{
    list_remove(&curClass->entry);

    if (curClass->runContext & CLSCTX_LOCAL_SERVER)
        RPC_StopLocalServer(curClass->RpcRegistration);

    IUnknown_Release(curClass->classObject);
    HeapFree(GetProcessHeap(), 0, curClass);
}

static void COM_RevokeAllClasses(const struct apartment *apt)
{
  RegisteredClass *curClass, *cursor;

  EnterCriticalSection( &csRegisteredClassList );

  LIST_FOR_EACH_ENTRY_SAFE(curClass, cursor, &RegisteredClassList, RegisteredClass, entry)
  {
    if (curClass->apartment_id == apt->oxid)
      COM_RevokeRegisteredClassObject(curClass);
  }

  LeaveCriticalSection( &csRegisteredClassList );
}

static void revoke_registered_psclsids(void)
{
    struct registered_psclsid *psclsid, *psclsid2;

    EnterCriticalSection( &cs_registered_psclsid_list );

    LIST_FOR_EACH_ENTRY_SAFE(psclsid, psclsid2, &registered_psclsid_list, struct registered_psclsid, entry)
    {
        list_remove(&psclsid->entry);
        HeapFree(GetProcessHeap(), 0, psclsid);
    }

    LeaveCriticalSection( &cs_registered_psclsid_list );
}

/******************************************************************************
 * Implementation of the manual reset event object. (CLSID_ManualResetEvent)
 */

typedef struct ManualResetEvent {
    ISynchronize        ISynchronize_iface;
    ISynchronizeHandle  ISynchronizeHandle_iface;
    LONG ref;
    HANDLE event;
} MREImpl;

static inline MREImpl *impl_from_ISynchronize(ISynchronize *iface)
{
    return CONTAINING_RECORD(iface, MREImpl, ISynchronize_iface);
}

static HRESULT WINAPI ISynchronize_fnQueryInterface(ISynchronize *iface, REFIID riid, void **ppv)
{
    MREImpl *This = impl_from_ISynchronize(iface);

    TRACE("%p (%s, %p)\n", This, debugstr_guid(riid), ppv);

    if(IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_ISynchronize)) {
        *ppv = &This->ISynchronize_iface;
    }else if(IsEqualGUID(riid, &IID_ISynchronizeHandle)) {
        *ppv = &This->ISynchronizeHandle_iface;
    }else {
        ERR("Unknown interface %s requested.\n", debugstr_guid(riid));
        *ppv = NULL;
        return E_NOINTERFACE;
    }

    IUnknown_AddRef((IUnknown*)*ppv);
    return S_OK;
}

static ULONG WINAPI ISynchronize_fnAddRef(ISynchronize *iface)
{
    MREImpl *This = impl_from_ISynchronize(iface);
    LONG ref = InterlockedIncrement(&This->ref);
    TRACE("%p - ref %d\n", This, ref);

    return ref;
}

static ULONG WINAPI ISynchronize_fnRelease(ISynchronize *iface)
{
    MREImpl *This = impl_from_ISynchronize(iface);
    LONG ref = InterlockedDecrement(&This->ref);
    TRACE("%p - ref %d\n", This, ref);

    if(!ref)
    {
        CloseHandle(This->event);
        HeapFree(GetProcessHeap(), 0, This);
    }

    return ref;
}

static HRESULT WINAPI ISynchronize_fnWait(ISynchronize *iface, DWORD dwFlags, DWORD dwMilliseconds)
{
    MREImpl *This = impl_from_ISynchronize(iface);
    UINT index;
    TRACE("%p (%08x, %08x)\n", This, dwFlags, dwMilliseconds);
    return CoWaitForMultipleHandles(dwFlags, dwMilliseconds, 1, &This->event, &index);
}

static HRESULT WINAPI ISynchronize_fnSignal(ISynchronize *iface)
{
    MREImpl *This = impl_from_ISynchronize(iface);
    TRACE("%p\n", This);
    SetEvent(This->event);
    return S_OK;
}

static HRESULT WINAPI ISynchronize_fnReset(ISynchronize *iface)
{
    MREImpl *This = impl_from_ISynchronize(iface);
    TRACE("%p\n", This);
    ResetEvent(This->event);
    return S_OK;
}

static ISynchronizeVtbl vt_ISynchronize = {
    ISynchronize_fnQueryInterface,
    ISynchronize_fnAddRef,
    ISynchronize_fnRelease,
    ISynchronize_fnWait,
    ISynchronize_fnSignal,
    ISynchronize_fnReset
};

static inline MREImpl *impl_from_ISynchronizeHandle(ISynchronizeHandle *iface)
{
    return CONTAINING_RECORD(iface, MREImpl, ISynchronizeHandle_iface);
}

static HRESULT WINAPI SynchronizeHandle_QueryInterface(ISynchronizeHandle *iface, REFIID riid, void **ppv)
{
    MREImpl *This = impl_from_ISynchronizeHandle(iface);
    return ISynchronize_QueryInterface(&This->ISynchronize_iface, riid, ppv);
}

static ULONG WINAPI SynchronizeHandle_AddRef(ISynchronizeHandle *iface)
{
    MREImpl *This = impl_from_ISynchronizeHandle(iface);
    return ISynchronize_AddRef(&This->ISynchronize_iface);
}

static ULONG WINAPI SynchronizeHandle_Release(ISynchronizeHandle *iface)
{
    MREImpl *This = impl_from_ISynchronizeHandle(iface);
    return ISynchronize_Release(&This->ISynchronize_iface);
}

static HRESULT WINAPI SynchronizeHandle_GetHandle(ISynchronizeHandle *iface, HANDLE *ph)
{
    MREImpl *This = impl_from_ISynchronizeHandle(iface);

    *ph = This->event;
    return S_OK;
}

static const ISynchronizeHandleVtbl SynchronizeHandleVtbl = {
    SynchronizeHandle_QueryInterface,
    SynchronizeHandle_AddRef,
    SynchronizeHandle_Release,
    SynchronizeHandle_GetHandle
};

static HRESULT ManualResetEvent_Construct(IUnknown *punkouter, REFIID iid, void **ppv)
{
    MREImpl *This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(MREImpl));
    HRESULT hr;

    if(punkouter)
        FIXME("Aggregation not implemented.\n");

    This->ref = 1;
    This->ISynchronize_iface.lpVtbl = &vt_ISynchronize;
    This->ISynchronizeHandle_iface.lpVtbl = &SynchronizeHandleVtbl;
    This->event = CreateEventW(NULL, TRUE, FALSE, NULL);

    hr = ISynchronize_QueryInterface(&This->ISynchronize_iface, iid, ppv);
    ISynchronize_Release(&This->ISynchronize_iface);
    return hr;
}

static inline LocalServer *impl_from_IServiceProvider(IServiceProvider *iface)
{
    return CONTAINING_RECORD(iface, LocalServer, IServiceProvider_iface);
}

static HRESULT WINAPI LocalServer_QueryInterface(IServiceProvider *iface, REFIID riid, void **ppv)
{
    LocalServer *This = impl_from_IServiceProvider(iface);

    TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);

    if(IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_IServiceProvider)) {
        *ppv = &This->IServiceProvider_iface;
    }else {
        *ppv = NULL;
        return E_NOINTERFACE;
    }

    IUnknown_AddRef((IUnknown*)*ppv);
    return S_OK;
}

static ULONG WINAPI LocalServer_AddRef(IServiceProvider *iface)
{
    LocalServer *This = impl_from_IServiceProvider(iface);
    LONG ref = InterlockedIncrement(&This->ref);

    TRACE("(%p) ref=%d\n", This, ref);

    return ref;
}

static ULONG WINAPI LocalServer_Release(IServiceProvider *iface)
{
    LocalServer *This = impl_from_IServiceProvider(iface);
    LONG ref = InterlockedDecrement(&This->ref);

    TRACE("(%p) ref=%d\n", This, ref);

    if(!ref) {
        assert(!This->apt);
        HeapFree(GetProcessHeap(), 0, This);
    }

    return ref;
}

static HRESULT WINAPI LocalServer_QueryService(IServiceProvider *iface, REFGUID guid, REFIID riid, void **ppv)
{
    LocalServer *This = impl_from_IServiceProvider(iface);
    APARTMENT *apt = COM_CurrentApt();
    RegisteredClass *iter;
    HRESULT hres = E_FAIL;

    TRACE("(%p)->(%s %s %p)\n", This, debugstr_guid(guid), debugstr_guid(riid), ppv);

    if(!This->apt)
        return E_UNEXPECTED;

    EnterCriticalSection(&csRegisteredClassList);

    LIST_FOR_EACH_ENTRY(iter, &RegisteredClassList, RegisteredClass, entry) {
        if(iter->apartment_id == apt->oxid
           && (iter->runContext & CLSCTX_LOCAL_SERVER)
           && IsEqualGUID(&iter->classIdentifier, guid)) {
            hres = IUnknown_QueryInterface(iter->classObject, riid, ppv);
            break;
        }
    }

    LeaveCriticalSection( &csRegisteredClassList );

    return hres;
}

static const IServiceProviderVtbl LocalServerVtbl = {
    LocalServer_QueryInterface,
    LocalServer_AddRef,
    LocalServer_Release,
    LocalServer_QueryService
};

static HRESULT get_local_server_stream(APARTMENT *apt, IStream **ret)
{
    HRESULT hres = S_OK;

    EnterCriticalSection(&apt->cs);

    if(!apt->local_server) {
        LocalServer *obj;

        obj = heap_alloc(sizeof(*obj));
        if(obj) {
            obj->IServiceProvider_iface.lpVtbl = &LocalServerVtbl;
            obj->ref = 1;
            obj->apt = apt;

            hres = CreateStreamOnHGlobal(0, TRUE, &obj->marshal_stream);
            if(SUCCEEDED(hres)) {
                hres = CoMarshalInterface(obj->marshal_stream, &IID_IServiceProvider, (IUnknown*)&obj->IServiceProvider_iface,
                        MSHCTX_LOCAL, NULL, MSHLFLAGS_TABLESTRONG);
                if(FAILED(hres))
                    IStream_Release(obj->marshal_stream);
            }

            if(SUCCEEDED(hres))
                apt->local_server = obj;
            else
                heap_free(obj);
        }else {
            hres = E_OUTOFMEMORY;
        }
    }

    if(SUCCEEDED(hres))
        hres = IStream_Clone(apt->local_server->marshal_stream, ret);

    LeaveCriticalSection(&apt->cs);

    if(FAILED(hres))
        ERR("Failed: %08x\n", hres);
    return hres;
}

/***********************************************************************
 *           CoRevokeClassObject [OLE32.@]
 *
 * Removes a class object from the class registry.
 *
 * PARAMS
 *  dwRegister [I] Cookie returned from CoRegisterClassObject().
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * NOTES
 *  Must be called from the same apartment that called CoRegisterClassObject(),
 *  otherwise it will fail with RPC_E_WRONG_THREAD.
 *
 * SEE ALSO
 *  CoRegisterClassObject
 */
HRESULT WINAPI DECLSPEC_HOTPATCH CoRevokeClassObject(
        DWORD dwRegister)
{
  HRESULT hr = E_INVALIDARG;
  RegisteredClass *curClass;
  APARTMENT *apt;

  TRACE("(%08x)\n",dwRegister);

  apt = COM_CurrentApt();
  if (!apt)
  {
    ERR("COM was not initialized\n");
    return CO_E_NOTINITIALIZED;
  }

  EnterCriticalSection( &csRegisteredClassList );

  LIST_FOR_EACH_ENTRY(curClass, &RegisteredClassList, RegisteredClass, entry)
  {
    /*
     * Check if we have a match on the cookie.
     */
    if (curClass->dwCookie == dwRegister)
    {
      if (curClass->apartment_id == apt->oxid)
      {
          COM_RevokeRegisteredClassObject(curClass);
          hr = S_OK;
      }
      else
      {
          ERR("called from wrong apartment, should be called from %s\n",
              wine_dbgstr_longlong(curClass->apartment_id));
          hr = RPC_E_WRONG_THREAD;
      }
      break;
    }
  }

  LeaveCriticalSection( &csRegisteredClassList );

  return hr;
}

/* frees unused libraries loaded by apartment_getclassobject by calling the
 * DLL's DllCanUnloadNow entry point */
static void apartment_freeunusedlibraries(struct apartment *apt, DWORD delay)
{
    struct apartment_loaded_dll *entry, *next;
    EnterCriticalSection(&apt->cs);
    LIST_FOR_EACH_ENTRY_SAFE(entry, next, &apt->loaded_dlls, struct apartment_loaded_dll, entry)
    {
        if (entry->dll->DllCanUnloadNow && (entry->dll->DllCanUnloadNow() == S_OK))
        {
            DWORD real_delay = delay;

            if (real_delay == INFINITE)
            {
                /* DLLs that return multi-threaded objects aren't unloaded
                 * straight away to cope for programs that have races between
                 * last object destruction and threads in the DLLs that haven't
                 * finished, despite DllCanUnloadNow returning S_OK */
                if (entry->multi_threaded)
                    real_delay = 10 * 60 * 1000; /* 10 minutes */
                else
                    real_delay = 0;
            }

            if (!real_delay || (entry->unload_time && ((int)(GetTickCount() - entry->unload_time) > 0)))
            {
                list_remove(&entry->entry);
                COMPOBJ_DllList_ReleaseRef(entry->dll, TRUE);
                HeapFree(GetProcessHeap(), 0, entry);
            }
            else
            {
                entry->unload_time = GetTickCount() + real_delay;
                if (!entry->unload_time) entry->unload_time = 1;
            }
        }
        else if (entry->unload_time)
            entry->unload_time = 0;
    }
    LeaveCriticalSection(&apt->cs);
}

DWORD apartment_release(struct apartment *apt)
{
    DWORD ret;

    EnterCriticalSection(&csApartment);

    ret = InterlockedDecrement(&apt->refs);
    TRACE("%s: after = %d\n", wine_dbgstr_longlong(apt->oxid), ret);
    /* destruction stuff that needs to happen under csApartment CS */
    if (ret == 0)
    {
        if (apt == MTA) MTA = NULL;
        else if (apt == MainApartment) MainApartment = NULL;
        list_remove(&apt->entry);
    }

    LeaveCriticalSection(&csApartment);

    if (ret == 0)
    {
        struct list *cursor, *cursor2;

        TRACE("destroying apartment %p, oxid %s\n", apt, wine_dbgstr_longlong(apt->oxid));

        if(apt->local_server) {
            LocalServer *local_server = apt->local_server;
            LARGE_INTEGER zero;

            memset(&zero, 0, sizeof(zero));
            IStream_Seek(local_server->marshal_stream, zero, STREAM_SEEK_SET, NULL);
            CoReleaseMarshalData(local_server->marshal_stream);
            IStream_Release(local_server->marshal_stream);
            local_server->marshal_stream = NULL;

            apt->local_server = NULL;
            local_server->apt = NULL;
            IServiceProvider_Release(&local_server->IServiceProvider_iface);
        }

        /* Release the references to the registered class objects */
        COM_RevokeAllClasses(apt);

        /* no locking is needed for this apartment, because no other thread
         * can access it at this point */

        apartment_disconnectproxies(apt);

        if (apt->win) DestroyWindow(apt->win);
        if (apt->host_apt_tid) PostThreadMessageW(apt->host_apt_tid, WM_QUIT, 0, 0);

        LIST_FOR_EACH_SAFE(cursor, cursor2, &apt->stubmgrs)
        {
            struct stub_manager *stubmgr = LIST_ENTRY(cursor, struct stub_manager, entry);
            /* release the implicit reference given by the fact that the
             * stub has external references (it must do since it is in the
             * stub manager list in the apartment and all non-apartment users
             * must have a ref on the apartment and so it cannot be destroyed).
             */
            stub_manager_int_release(stubmgr);
        }

        /* if this assert fires, then another thread took a reference to a
         * stub manager without taking a reference to the containing
         * apartment, which it must do. */
        assert(list_empty(&apt->stubmgrs));

        if (apt->filter) IMessageFilter_Release(apt->filter);

        /* free as many unused libraries as possible... */
        apartment_freeunusedlibraries(apt, 0);

        /* ... and free the memory for the apartment loaded dll entry and
         * release the dll list reference without freeing the library for the
         * rest */
        while ((cursor = list_head(&apt->loaded_dlls)))
        {
            struct apartment_loaded_dll *apartment_loaded_dll = LIST_ENTRY(cursor, struct apartment_loaded_dll, entry);
            COMPOBJ_DllList_ReleaseRef(apartment_loaded_dll->dll, FALSE);
            list_remove(cursor);
            HeapFree(GetProcessHeap(), 0, apartment_loaded_dll);
        }

        DEBUG_CLEAR_CRITSEC_NAME(&apt->cs);
        DeleteCriticalSection(&apt->cs);

        HeapFree(GetProcessHeap(), 0, apt);
    }

    return ret;
}

/* The given OXID must be local to this process: 
 *
 * The ref parameter is here mostly to ensure people remember that
 * they get one, you should normally take a ref for thread safety.
 */
APARTMENT *apartment_findfromoxid(OXID oxid, BOOL ref)
{
    APARTMENT *result = NULL;
    struct list *cursor;

    EnterCriticalSection(&csApartment);
    LIST_FOR_EACH( cursor, &apts )
    {
        struct apartment *apt = LIST_ENTRY( cursor, struct apartment, entry );
        if (apt->oxid == oxid)
        {
            result = apt;
            if (ref) apartment_addref(result);
            break;
        }
    }
    LeaveCriticalSection(&csApartment);

    return result;
}

/* gets the apartment which has a given creator thread ID. The caller must
 * release the reference from the apartment as soon as the apartment pointer
 * is no longer required. */
APARTMENT *apartment_findfromtid(DWORD tid)
{
    APARTMENT *result = NULL;
    struct list *cursor;

    EnterCriticalSection(&csApartment);
    LIST_FOR_EACH( cursor, &apts )
    {
        struct apartment *apt = LIST_ENTRY( cursor, struct apartment, entry );
        if (apt->tid == tid)
        {
            result = apt;
            apartment_addref(result);
            break;
        }
    }
    LeaveCriticalSection(&csApartment);

    return result;
}

/* gets the main apartment if it exists. The caller must
 * release the reference from the apartment as soon as the apartment pointer
 * is no longer required. */
static APARTMENT *apartment_findmain(void)
{
    APARTMENT *result;

    EnterCriticalSection(&csApartment);

    result = MainApartment;
    if (result) apartment_addref(result);

    LeaveCriticalSection(&csApartment);

    return result;
}

/* gets the multi-threaded apartment if it exists. The caller must
 * release the reference from the apartment as soon as the apartment pointer
 * is no longer required. */
static APARTMENT *apartment_find_multi_threaded(void)
{
    APARTMENT *result = NULL;
    struct list *cursor;

    EnterCriticalSection(&csApartment);

    LIST_FOR_EACH( cursor, &apts )
    {
        struct apartment *apt = LIST_ENTRY( cursor, struct apartment, entry );
        if (apt->multi_threaded)
        {
            result = apt;
            apartment_addref(result);
            break;
        }
    }

    LeaveCriticalSection(&csApartment);
    return result;
}

/* gets the specified class object by loading the appropriate DLL, if
 * necessary and calls the DllGetClassObject function for the DLL */
static HRESULT apartment_getclassobject(struct apartment *apt, LPCWSTR dllpath,
                                        BOOL apartment_threaded,
                                        REFCLSID rclsid, REFIID riid, void **ppv)
{
    static const WCHAR wszOle32[] = {'o','l','e','3','2','.','d','l','l',0};
    HRESULT hr = S_OK;
    BOOL found = FALSE;
    struct apartment_loaded_dll *apartment_loaded_dll;

    if (!strcmpiW(dllpath, wszOle32))
    {
        /* we don't need to control the lifetime of this dll, so use the local
         * implementation of DllGetClassObject directly */
        TRACE("calling ole32!DllGetClassObject\n");
        hr = DllGetClassObject(rclsid, riid, ppv);

        if (hr != S_OK)
            ERR("DllGetClassObject returned error 0x%08x\n", hr);

        return hr;
    }

    EnterCriticalSection(&apt->cs);

    LIST_FOR_EACH_ENTRY(apartment_loaded_dll, &apt->loaded_dlls, struct apartment_loaded_dll, entry)
        if (!strcmpiW(dllpath, apartment_loaded_dll->dll->library_name))
        {
            TRACE("found %s already loaded\n", debugstr_w(dllpath));
            found = TRUE;
            break;
        }

    if (!found)
    {
        apartment_loaded_dll = HeapAlloc(GetProcessHeap(), 0, sizeof(*apartment_loaded_dll));
        if (!apartment_loaded_dll)
            hr = E_OUTOFMEMORY;
        if (SUCCEEDED(hr))
        {
            apartment_loaded_dll->unload_time = 0;
            apartment_loaded_dll->multi_threaded = FALSE;
            hr = COMPOBJ_DllList_Add( dllpath, &apartment_loaded_dll->dll );
            if (FAILED(hr))
                HeapFree(GetProcessHeap(), 0, apartment_loaded_dll);
        }
        if (SUCCEEDED(hr))
        {
            TRACE("added new loaded dll %s\n", debugstr_w(dllpath));
            list_add_tail(&apt->loaded_dlls, &apartment_loaded_dll->entry);
        }
    }

    LeaveCriticalSection(&apt->cs);

    if (SUCCEEDED(hr))
    {
        /* one component being multi-threaded overrides any number of
         * apartment-threaded components */
        if (!apartment_threaded)
            apartment_loaded_dll->multi_threaded = TRUE;

        TRACE("calling DllGetClassObject %p\n", apartment_loaded_dll->dll->DllGetClassObject);
        /* OK: get the ClassObject */
        hr = apartment_loaded_dll->dll->DllGetClassObject(rclsid, riid, ppv);

        if (hr != S_OK)
            ERR("DllGetClassObject returned error 0x%08x\n", hr);
    }

    return hr;
}

/***********************************************************************
 *      COM_RegReadPath [internal]
 *
 *      Reads a registry value and expands it when necessary
 */
static DWORD COM_RegReadPath(const struct class_reg_data *regdata, WCHAR *dst, DWORD dstlen)
{
    DWORD ret;

    if (regdata->hkey)
    {
        DWORD keytype;
        WCHAR src[MAX_PATH];
        DWORD dwLength = dstlen * sizeof(WCHAR);

        if( (ret = RegQueryValueExW(regdata->u.hkey, NULL, NULL, &keytype, (BYTE*)src, &dwLength)) == ERROR_SUCCESS ) {
            if (keytype == REG_EXPAND_SZ) {
              if (dstlen <= ExpandEnvironmentStringsW(src, dst, dstlen)) ret = ERROR_MORE_DATA;
            } else {
              const WCHAR *quote_start;
              quote_start = strchrW(src, '\"');
              if (quote_start) {
                const WCHAR *quote_end = strchrW(quote_start + 1, '\"');
                if (quote_end) {
                  memmove(src, quote_start + 1,
                          (quote_end - quote_start - 1) * sizeof(WCHAR));
                  src[quote_end - quote_start - 1] = '\0';
                }
              }
              lstrcpynW(dst, src, dstlen);
            }
        }
        return ret;
    }
    else
    {
        ULONG_PTR cookie;
        WCHAR *nameW;

        *dst = 0;
        nameW = (WCHAR*)((BYTE*)regdata->u.actctx.section + regdata->u.actctx.data->name_offset);
        ActivateActCtx(regdata->u.actctx.hactctx, &cookie);
        ret = SearchPathW(NULL, nameW, NULL, dstlen, dst, NULL);
        DeactivateActCtx(0, cookie);
        return !*dst;
    }
}

struct host_object_params
{
    struct class_reg_data regdata;
    CLSID clsid; /* clsid of object to marshal */
    IID iid; /* interface to marshal */
    HANDLE event; /* event signalling when ready for multi-threaded case */
    HRESULT hr; /* result for multi-threaded case */
    IStream *stream; /* stream that the object will be marshaled into */
    BOOL apartment_threaded; /* is the component purely apartment-threaded? */
};

static HRESULT apartment_hostobject(struct apartment *apt,
                                    const struct host_object_params *params)
{
    IUnknown *object;
    HRESULT hr;
    static const LARGE_INTEGER llZero;
    WCHAR dllpath[MAX_PATH+1];

    TRACE("clsid %s, iid %s\n", debugstr_guid(&params->clsid), debugstr_guid(&params->iid));

    if (COM_RegReadPath(&params->regdata, dllpath, ARRAYSIZE(dllpath)) != ERROR_SUCCESS)
    {
        /* failure: CLSID is not found in registry */
        WARN("class %s not registered inproc\n", debugstr_guid(&params->clsid));
        return REGDB_E_CLASSNOTREG;
    }

    hr = apartment_getclassobject(apt, dllpath, params->apartment_threaded,
                                  &params->clsid, &params->iid, (void **)&object);
    if (FAILED(hr))
        return hr;

    hr = CoMarshalInterface(params->stream, &params->iid, object, MSHCTX_INPROC, NULL, MSHLFLAGS_NORMAL);
    if (FAILED(hr))
        IUnknown_Release(object);
    IStream_Seek(params->stream, llZero, STREAM_SEEK_SET, NULL);

    return hr;
}

static LRESULT CALLBACK apartment_wndproc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch (msg)
    {
    case DM_EXECUTERPC:
        RPC_ExecuteCall((struct dispatch_params *)lParam);
        return 0;
    case DM_HOSTOBJECT:
        return apartment_hostobject(COM_CurrentApt(), (const struct host_object_params *)lParam);
    default:
        return DefWindowProcW(hWnd, msg, wParam, lParam);
    }
}

struct host_thread_params
{
    COINIT threading_model;
    HANDLE ready_event;
    HWND apartment_hwnd;
};

/* thread for hosting an object to allow an object to appear to be created in
 * an apartment with an incompatible threading model */
static DWORD CALLBACK apartment_hostobject_thread(LPVOID p)
{
    struct host_thread_params *params = p;
    MSG msg;
    HRESULT hr;
    struct apartment *apt;

    TRACE("\n");

    hr = CoInitializeEx(NULL, params->threading_model);
    if (FAILED(hr)) return hr;

    apt = COM_CurrentApt();
    if (params->threading_model == COINIT_APARTMENTTHREADED)
    {
        apartment_createwindowifneeded(apt);
        params->apartment_hwnd = apartment_getwindow(apt);
    }
    else
        params->apartment_hwnd = NULL;

    /* force the message queue to be created before signaling parent thread */
    PeekMessageW(&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE);

    SetEvent(params->ready_event);
    params = NULL; /* can't touch params after here as it may be invalid */

    while (GetMessageW(&msg, NULL, 0, 0))
    {
        if (!msg.hwnd && (msg.message == DM_HOSTOBJECT))
        {
            struct host_object_params *obj_params = (struct host_object_params *)msg.lParam;
            obj_params->hr = apartment_hostobject(apt, obj_params);
            SetEvent(obj_params->event);
        }
        else
        {
            TranslateMessage(&msg);
            DispatchMessageW(&msg);
        }
    }

    TRACE("exiting\n");

    CoUninitialize();

    return S_OK;
}

/* finds or creates a host apartment, creates the object inside it and returns
 * a proxy to it so that the object can be used in the apartment of the
 * caller of this function */
static HRESULT apartment_hostobject_in_hostapt(
    struct apartment *apt, BOOL multi_threaded, BOOL main_apartment,
    const struct class_reg_data *regdata, REFCLSID rclsid, REFIID riid, void **ppv)
{
    struct host_object_params params;
    HWND apartment_hwnd = NULL;
    DWORD apartment_tid = 0;
    HRESULT hr;

    if (!multi_threaded && main_apartment)
    {
        APARTMENT *host_apt = apartment_findmain();
        if (host_apt)
        {
            apartment_hwnd = apartment_getwindow(host_apt);
            apartment_release(host_apt);
        }
    }

    if (!apartment_hwnd)
    {
        EnterCriticalSection(&apt->cs);

        if (!apt->host_apt_tid)
        {
            struct host_thread_params thread_params;
            HANDLE handles[2];
            DWORD wait_value;

            thread_params.threading_model = multi_threaded ? COINIT_MULTITHREADED : COINIT_APARTMENTTHREADED;
            handles[0] = thread_params.ready_event = CreateEventW(NULL, FALSE, FALSE, NULL);
            thread_params.apartment_hwnd = NULL;
            handles[1] = CreateThread(NULL, 0, apartment_hostobject_thread, &thread_params, 0, &apt->host_apt_tid);
            if (!handles[1])
            {
                CloseHandle(handles[0]);
                LeaveCriticalSection(&apt->cs);
                return E_OUTOFMEMORY;
            }
            wait_value = WaitForMultipleObjects(2, handles, FALSE, INFINITE);
            CloseHandle(handles[0]);
            CloseHandle(handles[1]);
            if (wait_value == WAIT_OBJECT_0)
                apt->host_apt_hwnd = thread_params.apartment_hwnd;
            else
            {
                LeaveCriticalSection(&apt->cs);
                return E_OUTOFMEMORY;
            }
        }

        if (multi_threaded || !main_apartment)
        {
            apartment_hwnd = apt->host_apt_hwnd;
            apartment_tid = apt->host_apt_tid;
        }

        LeaveCriticalSection(&apt->cs);
    }

    /* another thread may have become the main apartment in the time it took
     * us to create the thread for the host apartment */
    if (!apartment_hwnd && !multi_threaded && main_apartment)
    {
        APARTMENT *host_apt = apartment_findmain();
        if (host_apt)
        {
            apartment_hwnd = apartment_getwindow(host_apt);
            apartment_release(host_apt);
        }
    }

    params.regdata = *regdata;
    params.clsid = *rclsid;
    params.iid = *riid;
    hr = CreateStreamOnHGlobal(NULL, TRUE, &params.stream);
    if (FAILED(hr))
        return hr;
    params.apartment_threaded = !multi_threaded;
    if (multi_threaded)
    {
        params.hr = S_OK;
        params.event = CreateEventW(NULL, FALSE, FALSE, NULL);
        if (!PostThreadMessageW(apartment_tid, DM_HOSTOBJECT, 0, (LPARAM)&params))
            hr = E_OUTOFMEMORY;
        else
        {
            WaitForSingleObject(params.event, INFINITE);
            hr = params.hr;
        }
        CloseHandle(params.event);
    }
    else
    {
        if (!apartment_hwnd)
        {
            ERR("host apartment didn't create window\n");
            hr = E_OUTOFMEMORY;
        }
        else
            hr = SendMessageW(apartment_hwnd, DM_HOSTOBJECT, 0, (LPARAM)&params);
    }
    if (SUCCEEDED(hr))
        hr = CoUnmarshalInterface(params.stream, riid, ppv);
    IStream_Release(params.stream);
    return hr;
}

static BOOL WINAPI register_class( INIT_ONCE *once, void *param, void **context )
{
    WNDCLASSW wclass;

    /* Dispatching to the correct thread in an apartment is done through
     * window messages rather than RPC transports. When an interface is
     * marshalled into another apartment in the same process, a window of the
     * following class is created. The *caller* of CoMarshalInterface (i.e., the
     * application) is responsible for pumping the message loop in that thread.
     * The WM_USER messages which point to the RPCs are then dispatched to
     * apartment_wndproc by the user's code from the apartment in which the
     * interface was unmarshalled.
     */
    memset(&wclass, 0, sizeof(wclass));
    wclass.lpfnWndProc = apartment_wndproc;
    wclass.hInstance = hProxyDll;
    wclass.lpszClassName = wszAptWinClass;
    RegisterClassW(&wclass);
    return TRUE;
}

/* create a window for the apartment or return the current one if one has
 * already been created */
HRESULT apartment_createwindowifneeded(struct apartment *apt)
{
    static INIT_ONCE class_init_once = INIT_ONCE_STATIC_INIT;

    if (apt->multi_threaded)
        return S_OK;

    if (!apt->win)
    {
        HWND hwnd;

        InitOnceExecuteOnce( &class_init_once, register_class, NULL, NULL );

        hwnd = CreateWindowW(wszAptWinClass, NULL, 0, 0, 0, 0, 0,
                             HWND_MESSAGE, 0, hProxyDll, NULL);
        if (!hwnd)
        {
            ERR("CreateWindow failed with error %d\n", GetLastError());
            return HRESULT_FROM_WIN32(GetLastError());
        }
        if (InterlockedCompareExchangePointer((PVOID *)&apt->win, hwnd, NULL))
            /* someone beat us to it */
            DestroyWindow(hwnd);
    }

    return S_OK;
}

/* retrieves the window for the main- or apartment-threaded apartment */
HWND apartment_getwindow(const struct apartment *apt)
{
    assert(!apt->multi_threaded);
    return apt->win;
}

static void COM_TlsDestroy(void)
{
    struct oletls *info = NtCurrentTeb()->ReservedForOle;
    if (info)
    {
        if (info->apt) apartment_release(info->apt);
        if (info->errorinfo) IErrorInfo_Release(info->errorinfo);
        if (info->state) IUnknown_Release(info->state);
        if (info->spy) IInitializeSpy_Release(info->spy);
        if (info->context_token) IObjContext_Release(info->context_token);
        HeapFree(GetProcessHeap(), 0, info);
        NtCurrentTeb()->ReservedForOle = NULL;
    }
}

/******************************************************************************
 *           CoBuildVersion [OLE32.@]
 *
 * Gets the build version of the DLL.
 *
 * PARAMS
 *
 * RETURNS
 *      Current build version, hiword is majornumber, loword is minornumber
 */
DWORD WINAPI CoBuildVersion(void)
{
    TRACE("Returning version %d, build %d.\n", rmm, rup);
    return (rmm<<16)+rup;
}

/******************************************************************************
 *              CoRegisterInitializeSpy [OLE32.@]
 *
 * Add a Spy that watches CoInitializeEx calls
 *
 * PARAMS
 *  spy [I] Pointer to IUnknown interface that will be QueryInterface'd.
 *  cookie [II] cookie receiver
 *
 * RETURNS
 *  Success: S_OK if not already initialized, S_FALSE otherwise.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *   CoInitializeEx
 */
HRESULT WINAPI CoRegisterInitializeSpy(IInitializeSpy *spy, ULARGE_INTEGER *cookie)
{
    struct oletls *info = COM_CurrentInfo();
    HRESULT hr;

    TRACE("(%p, %p)\n", spy, cookie);

    if (!spy || !cookie || !info)
    {
        if (!info)
            WARN("Could not allocate tls\n");
        return E_INVALIDARG;
    }

    if (info->spy)
    {
        FIXME("Already registered?\n");
        return E_UNEXPECTED;
    }

    hr = IInitializeSpy_QueryInterface(spy, &IID_IInitializeSpy, (void **) &info->spy);
    if (SUCCEEDED(hr))
    {
        cookie->QuadPart = (DWORD_PTR)spy;
        return S_OK;
    }
    return hr;
}

/******************************************************************************
 *              CoRevokeInitializeSpy [OLE32.@]
 *
 * Remove a spy that previously watched CoInitializeEx calls
 *
 * PARAMS
 *  cookie [I] The cookie obtained from a previous CoRegisterInitializeSpy call
 *
 * RETURNS
 *  Success: S_OK if a spy is removed
 *  Failure: E_INVALIDARG
 *
 * SEE ALSO
 *   CoInitializeEx
 */
HRESULT WINAPI CoRevokeInitializeSpy(ULARGE_INTEGER cookie)
{
    struct oletls *info = COM_CurrentInfo();
    TRACE("(%s)\n", wine_dbgstr_longlong(cookie.QuadPart));

    if (!info || !info->spy || cookie.QuadPart != (DWORD_PTR)info->spy)
        return E_INVALIDARG;

    IInitializeSpy_Release(info->spy);
    info->spy = NULL;
    return S_OK;
}

HRESULT enter_apartment( struct oletls *info, DWORD model )
{
    HRESULT hr = S_OK;

    if (!info->apt)
    {
        if (!apartment_get_or_create( model ))
            return E_OUTOFMEMORY;
    }
    else if (!apartment_is_model( info->apt, model ))
    {
        WARN( "Attempt to change threading model of this apartment from %s to %s\n",
              info->apt->multi_threaded ? "multi-threaded" : "apartment threaded",
              model & COINIT_APARTMENTTHREADED ? "apartment threaded" : "multi-threaded" );
        return RPC_E_CHANGED_MODE;
    }
    else
        hr = S_FALSE;

    info->inits++;

    return hr;
}

void leave_apartment( struct oletls *info )
{
    if (!--info->inits)
    {
        if (info->ole_inits)
            WARN( "Uninitializing apartment while Ole is still initialized\n" );
        apartment_release( info->apt );
        info->apt = NULL;
    }
}

/******************************************************************************
 *              CoInitialize    [OLE32.@]
 *
 * Initializes the COM libraries by calling CoInitializeEx with
 * COINIT_APARTMENTTHREADED, ie it enters a STA thread.
 *
 * PARAMS
 *  lpReserved [I] Pointer to IMalloc interface (obsolete, should be NULL).
 *
 * RETURNS
 *  Success: S_OK if not already initialized, S_FALSE otherwise.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *   CoInitializeEx
 */
HRESULT WINAPI CoInitialize(LPVOID lpReserved)
{
  /*
   * Just delegate to the newer method.
   */
  return CoInitializeEx(lpReserved, COINIT_APARTMENTTHREADED);
}

/******************************************************************************
 *              CoInitializeEx  [OLE32.@]
 *
 * Initializes the COM libraries.
 *
 * PARAMS
 *  lpReserved [I] Pointer to IMalloc interface (obsolete, should be NULL).
 *  dwCoInit   [I] One or more flags from the COINIT enumeration. See notes.
 *
 * RETURNS
 *  S_OK               if successful,
 *  S_FALSE            if this function was called already.
 *  RPC_E_CHANGED_MODE if a previous call to CoInitializeEx specified another
 *                     threading model.
 *
 * NOTES
 *
 * The behavior used to set the IMalloc used for memory management is
 * obsolete.
 * The dwCoInit parameter must specify one of the following apartment
 * threading models:
 *| COINIT_APARTMENTTHREADED - A single-threaded apartment (STA).
 *| COINIT_MULTITHREADED - A multi-threaded apartment (MTA).
 * The parameter may also specify zero or more of the following flags:
 *| COINIT_DISABLE_OLE1DDE - Don't use DDE for OLE1 support.
 *| COINIT_SPEED_OVER_MEMORY - Trade memory for speed.
 *
 * SEE ALSO
 *   CoUninitialize
 */
HRESULT WINAPI DECLSPEC_HOTPATCH CoInitializeEx(LPVOID lpReserved, DWORD dwCoInit)
{
  struct oletls *info = COM_CurrentInfo();
  HRESULT hr;

  TRACE("(%p, %x)\n", lpReserved, (int)dwCoInit);

  if (lpReserved!=NULL)
  {
    ERR("(%p, %x) - Bad parameter passed-in %p, must be an old Windows Application\n", lpReserved, (int)dwCoInit, lpReserved);
  }

  /*
   * Check the lock count. If this is the first time going through the initialize
   * process, we have to initialize the libraries.
   *
   * And crank-up that lock count.
   */
  if (InterlockedExchangeAdd(&s_COMLockCount,1)==0)
  {
    /*
     * Initialize the various COM libraries and data structures.
     */
    TRACE("() - Initializing the COM libraries\n");

    /* we may need to defer this until after apartment initialisation */
    RunningObjectTableImpl_Initialize();
  }

  if (info->spy)
      IInitializeSpy_PreInitialize(info->spy, dwCoInit, info->inits);

  hr = enter_apartment( info, dwCoInit );

  if (info->spy)
      IInitializeSpy_PostInitialize(info->spy, hr, dwCoInit, info->inits);

  return hr;
}

/***********************************************************************
 *           CoUninitialize   [OLE32.@]
 *
 * This method will decrement the refcount on the current apartment, freeing
 * the resources associated with it if it is the last thread in the apartment.
 * If the last apartment is freed, the function will additionally release
 * any COM resources associated with the process.
 *
 * PARAMS
 *
 * RETURNS
 *  Nothing.
 *
 * SEE ALSO
 *   CoInitializeEx
 */
void WINAPI DECLSPEC_HOTPATCH CoUninitialize(void)
{
  struct oletls * info = COM_CurrentInfo();
  LONG lCOMRefCnt;

  TRACE("()\n");

  /* will only happen on OOM */
  if (!info) return;

  if (info->spy)
      IInitializeSpy_PreUninitialize(info->spy, info->inits);

  /* sanity check */
  if (!info->inits)
  {
    ERR("Mismatched CoUninitialize\n");

    if (info->spy)
        IInitializeSpy_PostUninitialize(info->spy, info->inits);
    return;
  }

  leave_apartment( info );

  /*
   * Decrease the reference count.
   * If we are back to 0 locks on the COM library, make sure we free
   * all the associated data structures.
   */
  lCOMRefCnt = InterlockedExchangeAdd(&s_COMLockCount,-1);
  if (lCOMRefCnt==1)
  {
    TRACE("() - Releasing the COM libraries\n");

    revoke_registered_psclsids();
    RunningObjectTableImpl_UnInitialize();
  }
  else if (lCOMRefCnt<1) {
    ERR( "CoUninitialize() - not CoInitialized.\n" );
    InterlockedExchangeAdd(&s_COMLockCount,1); /* restore the lock count. */
  }
  if (info->spy)
      IInitializeSpy_PostUninitialize(info->spy, info->inits);
}

/******************************************************************************
 *              CoDisconnectObject      [OLE32.@]
 *
 * Disconnects all connections to this object from remote processes. Dispatches
 * pending RPCs while blocking new RPCs from occurring, and then calls
 * IMarshal::DisconnectObject on the given object.
 *
 * Typically called when the object server is forced to shut down, for instance by
 * the user.
 *
 * PARAMS
 *  lpUnk    [I] The object whose stub should be disconnected.
 *  reserved [I] Reserved. Should be set to 0.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoMarshalInterface, CoReleaseMarshalData, CoLockObjectExternal
 */
HRESULT WINAPI CoDisconnectObject( LPUNKNOWN lpUnk, DWORD reserved )
{
    struct stub_manager *manager;
    HRESULT hr;
    IMarshal *marshal;
    APARTMENT *apt;

    TRACE("(%p, 0x%08x)\n", lpUnk, reserved);

    if (!lpUnk) return E_INVALIDARG;

    hr = IUnknown_QueryInterface(lpUnk, &IID_IMarshal, (void **)&marshal);
    if (hr == S_OK)
    {
        hr = IMarshal_DisconnectObject(marshal, reserved);
        IMarshal_Release(marshal);
        return hr;
    }

    apt = COM_CurrentApt();
    if (!apt)
        return CO_E_NOTINITIALIZED;

    manager = get_stub_manager_from_object(apt, lpUnk, FALSE);
    if (manager) {
        stub_manager_disconnect(manager);
        /* Release stub manager twice, to remove the apartment reference. */
        stub_manager_int_release(manager);
        stub_manager_int_release(manager);
    }

    /* Note: native is pretty broken here because it just silently
     * fails, without returning an appropriate error code if the object was
     * not found, making apps think that the object was disconnected, when
     * it actually wasn't */

    return S_OK;
}

/******************************************************************************
 *              CoCreateGuid [OLE32.@]
 *
 * Simply forwards to UuidCreate in RPCRT4.
 *
 * PARAMS
 *  pguid [O] Points to the GUID to initialize.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *   UuidCreate
 */
HRESULT WINAPI CoCreateGuid(GUID *pguid)
{
    DWORD status;

    if(!pguid) return E_INVALIDARG;

    status = UuidCreate(pguid);
    if (status == RPC_S_OK || status == RPC_S_UUID_LOCAL_ONLY) return S_OK;
    return HRESULT_FROM_WIN32( status );
}

static inline BOOL is_valid_hex(WCHAR c)
{
    if (!(((c >= '0') && (c <= '9'))  ||
          ((c >= 'a') && (c <= 'f'))  ||
          ((c >= 'A') && (c <= 'F'))))
        return FALSE;
    return TRUE;
}

static const BYTE guid_conv_table[256] =
{
  0,   0,   0,   0,   0,   0,   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 */
  0,   0,   0,   0,   0,   0,   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 */
  0,   0,   0,   0,   0,   0,   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 */
  0,   1,   2,   3,   4,   5,   6, 7, 8, 9, 0, 0, 0, 0, 0, 0, /* 0x30 */
  0, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x40 */
  0,   0,   0,   0,   0,   0,   0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x50 */
  0, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf                             /* 0x60 */
};

/* conversion helper for CLSIDFromString/IIDFromString */
static BOOL guid_from_string(LPCWSTR s, GUID *id)
{
  int   i;

  if (!s || s[0]!='{') {
    memset( id, 0, sizeof (CLSID) );
    if(!s) return TRUE;
    return FALSE;
  }

  TRACE("%s -> %p\n", debugstr_w(s), id);

  /* in form {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX} */

  id->Data1 = 0;
  for (i = 1; i < 9; i++) {
    if (!is_valid_hex(s[i])) return FALSE;
    id->Data1 = (id->Data1 << 4) | guid_conv_table[s[i]];
  }
  if (s[9]!='-') return FALSE;

  id->Data2 = 0;
  for (i = 10; i < 14; i++) {
    if (!is_valid_hex(s[i])) return FALSE;
    id->Data2 = (id->Data2 << 4) | guid_conv_table[s[i]];
  }
  if (s[14]!='-') return FALSE;

  id->Data3 = 0;
  for (i = 15; i < 19; i++) {
    if (!is_valid_hex(s[i])) return FALSE;
    id->Data3 = (id->Data3 << 4) | guid_conv_table[s[i]];
  }
  if (s[19]!='-') return FALSE;

  for (i = 20; i < 37; i+=2) {
    if (i == 24) {
      if (s[i]!='-') return FALSE;
      i++;
    }
    if (!is_valid_hex(s[i]) || !is_valid_hex(s[i+1])) return FALSE;
    id->Data4[(i-20)/2] = guid_conv_table[s[i]] << 4 | guid_conv_table[s[i+1]];
  }

  if (s[37] == '}' && s[38] == '\0')
    return TRUE;

  return FALSE;
}

/*****************************************************************************/

static HRESULT clsid_from_string_reg(LPCOLESTR progid, CLSID *clsid)
{
    static const WCHAR clsidW[] = { '\\','C','L','S','I','D',0 };
    WCHAR buf2[CHARS_IN_GUID];
    LONG buf2len = sizeof(buf2);
    HKEY xhkey;
    WCHAR *buf;

    memset(clsid, 0, sizeof(*clsid));
    buf = HeapAlloc( GetProcessHeap(),0,(strlenW(progid)+8) * sizeof(WCHAR) );
    if (!buf) return E_OUTOFMEMORY;
    strcpyW( buf, progid );
    strcatW( buf, clsidW );
    if (open_classes_key(HKEY_CLASSES_ROOT, buf, MAXIMUM_ALLOWED, &xhkey))
    {
        HeapFree(GetProcessHeap(),0,buf);
        WARN("couldn't open key for ProgID %s\n", debugstr_w(progid));
        return CO_E_CLASSSTRING;
    }
    HeapFree(GetProcessHeap(),0,buf);

    if (RegQueryValueW(xhkey,NULL,buf2,&buf2len))
    {
        RegCloseKey(xhkey);
        WARN("couldn't query clsid value for ProgID %s\n", debugstr_w(progid));
        return CO_E_CLASSSTRING;
    }
    RegCloseKey(xhkey);
    return guid_from_string(buf2, clsid) ? S_OK : CO_E_CLASSSTRING;
}

/******************************************************************************
 *              CLSIDFromString [OLE32.@]
 *
 * Converts a unique identifier from its string representation into
 * the GUID struct.
 *
 * PARAMS
 *  idstr [I] The string representation of the GUID.
 *  id    [O] GUID converted from the string.
 *
 * RETURNS
 *   S_OK on success
 *   CO_E_CLASSSTRING if idstr is not a valid CLSID
 *
 * SEE ALSO
 *  StringFromCLSID
 */
HRESULT WINAPI CLSIDFromString(LPCOLESTR idstr, LPCLSID id )
{
    HRESULT ret = CO_E_CLASSSTRING;
    CLSID tmp_id;

    if (!id)
        return E_INVALIDARG;

    if (guid_from_string(idstr, id))
        return S_OK;

    /* It appears a ProgID is also valid */
    ret = clsid_from_string_reg(idstr, &tmp_id);
    if(SUCCEEDED(ret))
        *id = tmp_id;

    return ret;
}

/******************************************************************************
 *              IIDFromString   [OLE32.@]
 *
 * Converts an interface identifier from its string representation to
 * the IID struct.
 *
 * PARAMS
 *  idstr [I] The string representation of the GUID.
 *  id    [O] IID converted from the string.
 *
 * RETURNS
 *   S_OK on success
 *   CO_E_IIDSTRING if idstr is not a valid IID
 *
 * SEE ALSO
 *  StringFromIID
 */
HRESULT WINAPI IIDFromString(LPCOLESTR s, IID *iid)
{
  TRACE("%s -> %p\n", debugstr_w(s), iid);

  if (!s)
  {
      memset(iid, 0, sizeof(*iid));
      return S_OK;
  }

  /* length mismatch is a special case */
  if (strlenW(s) + 1 != CHARS_IN_GUID)
      return E_INVALIDARG;

  if (s[0] != '{')
      return CO_E_IIDSTRING;

  return guid_from_string(s, iid) ? S_OK : CO_E_IIDSTRING;
}

/******************************************************************************
 *              StringFromCLSID [OLE32.@]
 *              StringFromIID   [OLE32.@]
 *
 * Converts a GUID into the respective string representation.
 * The target string is allocated using the OLE IMalloc.
 *
 * PARAMS
 *  id    [I] the GUID to be converted.
 *  idstr [O] A pointer to a to-be-allocated pointer pointing to the resulting string.
 *
 * RETURNS
 *   S_OK
 *   E_FAIL
 *
 * SEE ALSO
 *  StringFromGUID2, CLSIDFromString
 */
HRESULT WINAPI StringFromCLSID(REFCLSID id, LPOLESTR *idstr)
{
    if (!(*idstr = CoTaskMemAlloc(CHARS_IN_GUID * sizeof(WCHAR)))) return E_OUTOFMEMORY;
    StringFromGUID2( id, *idstr, CHARS_IN_GUID );
    return S_OK;
}

/******************************************************************************
 *              StringFromGUID2 [OLE32.@]
 *
 * Modified version of StringFromCLSID that allows you to specify max
 * buffer size.
 *
 * PARAMS
 *  id   [I] GUID to convert to string.
 *  str  [O] Buffer where the result will be stored.
 *  cmax [I] Size of the buffer in characters.
 *
 * RETURNS
 *      Success: The length of the resulting string in characters.
 *  Failure: 0.
 */
INT WINAPI StringFromGUID2(REFGUID id, LPOLESTR str, INT cmax)
{
    static const WCHAR formatW[] = { '{','%','0','8','X','-','%','0','4','X','-',
                                     '%','0','4','X','-','%','0','2','X','%','0','2','X','-',
                                     '%','0','2','X','%','0','2','X','%','0','2','X','%','0','2','X',
                                     '%','0','2','X','%','0','2','X','}',0 };
    if (!id || cmax < CHARS_IN_GUID) return 0;
    sprintfW( str, formatW, id->Data1, id->Data2, id->Data3,
              id->Data4[0], id->Data4[1], id->Data4[2], id->Data4[3],
              id->Data4[4], id->Data4[5], id->Data4[6], id->Data4[7] );
    return CHARS_IN_GUID;
}

/* open HKCR\\CLSID\\{string form of clsid}\\{keyname} key */
HRESULT COM_OpenKeyForCLSID(REFCLSID clsid, LPCWSTR keyname, REGSAM access, HKEY *subkey)
{
    static const WCHAR wszCLSIDSlash[] = {'C','L','S','I','D','\\',0};
    WCHAR path[CHARS_IN_GUID + ARRAYSIZE(wszCLSIDSlash) - 1];
    LONG res;
    HKEY key;

    strcpyW(path, wszCLSIDSlash);
    StringFromGUID2(clsid, path + strlenW(wszCLSIDSlash), CHARS_IN_GUID);
    res = open_classes_key(HKEY_CLASSES_ROOT, path, keyname ? KEY_READ : access, &key);
    if (res == ERROR_FILE_NOT_FOUND)
        return REGDB_E_CLASSNOTREG;
    else if (res != ERROR_SUCCESS)
        return REGDB_E_READREGDB;

    if (!keyname)
    {
        *subkey = key;
        return S_OK;
    }

    res = open_classes_key(key, keyname, access, subkey);
    RegCloseKey(key);
    if (res == ERROR_FILE_NOT_FOUND)
        return REGDB_E_KEYMISSING;
    else if (res != ERROR_SUCCESS)
        return REGDB_E_READREGDB;

    return S_OK;
}

/* open HKCR\\AppId\\{string form of appid clsid} key */
HRESULT COM_OpenKeyForAppIdFromCLSID(REFCLSID clsid, REGSAM access, HKEY *subkey)
{
    static const WCHAR szAppId[] = { 'A','p','p','I','d',0 };
    static const WCHAR szAppIdKey[] = { 'A','p','p','I','d','\\',0 };
    DWORD res;
    WCHAR buf[CHARS_IN_GUID];
    WCHAR keyname[ARRAYSIZE(szAppIdKey) + CHARS_IN_GUID];
    DWORD size;
    HKEY hkey;
    DWORD type;
    HRESULT hr;

    /* read the AppID value under the class's key */
    hr = COM_OpenKeyForCLSID(clsid, NULL, KEY_READ, &hkey);
    if (FAILED(hr))
        return hr;

    size = sizeof(buf);
    res = RegQueryValueExW(hkey, szAppId, NULL, &type, (LPBYTE)buf, &size);
    RegCloseKey(hkey);
    if (res == ERROR_FILE_NOT_FOUND)
        return REGDB_E_KEYMISSING;
    else if (res != ERROR_SUCCESS || type!=REG_SZ)
        return REGDB_E_READREGDB;

    strcpyW(keyname, szAppIdKey);
    strcatW(keyname, buf);
    res = open_classes_key(HKEY_CLASSES_ROOT, keyname, access, subkey);
    if (res == ERROR_FILE_NOT_FOUND)
        return REGDB_E_KEYMISSING;
    else if (res != ERROR_SUCCESS)
        return REGDB_E_READREGDB;

    return S_OK;
}

/******************************************************************************
 *               ProgIDFromCLSID [OLE32.@]
 *
 * Converts a class id into the respective program ID.
 *
 * PARAMS
 *  clsid        [I] Class ID, as found in registry.
 *  ppszProgID [O] Associated ProgID.
 *
 * RETURNS
 *   S_OK
 *   E_OUTOFMEMORY
 *   REGDB_E_CLASSNOTREG if the given clsid has no associated ProgID
 */
HRESULT WINAPI DECLSPEC_HOTPATCH ProgIDFromCLSID(REFCLSID clsid, LPOLESTR *ppszProgID)
{
    static const WCHAR wszProgID[] = {'P','r','o','g','I','D',0};
    ACTCTX_SECTION_KEYED_DATA data;
    HKEY     hkey;
    HRESULT  ret;
    LONG progidlen = 0;

    if (!ppszProgID)
        return E_INVALIDARG;

    *ppszProgID = NULL;

    data.cbSize = sizeof(data);
    if (FindActCtxSectionGuid(0, NULL, ACTIVATION_CONTEXT_SECTION_COM_SERVER_REDIRECTION,
                              clsid, &data))
    {
        struct comclassredirect_data *comclass = (struct comclassredirect_data*)data.lpData;
        if (comclass->progid_len)
        {
            WCHAR *ptrW;

            *ppszProgID = CoTaskMemAlloc(comclass->progid_len + sizeof(WCHAR));
            if (!*ppszProgID) return E_OUTOFMEMORY;

            ptrW = (WCHAR*)((BYTE*)comclass + comclass->progid_offset);
            memcpy(*ppszProgID, ptrW, comclass->progid_len + sizeof(WCHAR));
            return S_OK;
        }
        else
            return REGDB_E_CLASSNOTREG;
    }

    ret = COM_OpenKeyForCLSID(clsid, wszProgID, KEY_READ, &hkey);
    if (FAILED(ret))
        return ret;

    if (RegQueryValueW(hkey, NULL, NULL, &progidlen))
      ret = REGDB_E_CLASSNOTREG;

    if (ret == S_OK)
    {
      *ppszProgID = CoTaskMemAlloc(progidlen * sizeof(WCHAR));
      if (*ppszProgID)
      {
        if (RegQueryValueW(hkey, NULL, *ppszProgID, &progidlen)) {
          ret = REGDB_E_CLASSNOTREG;
          CoTaskMemFree(*ppszProgID);
          *ppszProgID = NULL;
        }
      }
      else
        ret = E_OUTOFMEMORY;
    }

    RegCloseKey(hkey);
    return ret;
}

/******************************************************************************
 *              CLSIDFromProgID [OLE32.@]
 *
 * Converts a program id into the respective GUID.
 *
 * PARAMS
 *  progid [I] Unicode program ID, as found in registry.
 *  clsid  [O] Associated CLSID.
 *
 * RETURNS
 *      Success: S_OK
 *  Failure: CO_E_CLASSSTRING - the given ProgID cannot be found.
 */
HRESULT WINAPI DECLSPEC_HOTPATCH CLSIDFromProgID(LPCOLESTR progid, LPCLSID clsid)
{
    ACTCTX_SECTION_KEYED_DATA data;

    if (!progid || !clsid)
        return E_INVALIDARG;

    data.cbSize = sizeof(data);
    if (FindActCtxSectionStringW(0, NULL, ACTIVATION_CONTEXT_SECTION_COM_PROGID_REDIRECTION,
                                 progid, &data))
    {
        struct progidredirect_data *progiddata = (struct progidredirect_data*)data.lpData;
        CLSID *alias = (CLSID*)((BYTE*)data.lpSectionBase + progiddata->clsid_offset);
        *clsid = *alias;
        return S_OK;
    }

    return clsid_from_string_reg(progid, clsid);
}

/******************************************************************************
 *              CLSIDFromProgIDEx [OLE32.@]
 */
HRESULT WINAPI CLSIDFromProgIDEx(LPCOLESTR progid, LPCLSID clsid)
{
    FIXME("%s,%p: semi-stub\n", debugstr_w(progid), clsid);

    return CLSIDFromProgID(progid, clsid);
}

static HRESULT get_ps_clsid_from_registry(const WCHAR* path, REGSAM access, CLSID *pclsid)
{
    HKEY hkey;
    WCHAR value[CHARS_IN_GUID];
    DWORD len;

    access |= KEY_READ;

    if (open_classes_key(HKEY_CLASSES_ROOT, path, access, &hkey))
        return REGDB_E_IIDNOTREG;

    len = sizeof(value);
    if (ERROR_SUCCESS != RegQueryValueExW(hkey, NULL, NULL, NULL, (BYTE *)value, &len))
        return REGDB_E_IIDNOTREG;
    RegCloseKey(hkey);

    if (CLSIDFromString(value, pclsid) != NOERROR)
        return REGDB_E_IIDNOTREG;

    return S_OK;
}

/*****************************************************************************
 *             CoGetPSClsid [OLE32.@]
 *
 * Retrieves the CLSID of the proxy/stub factory that implements
 * IPSFactoryBuffer for the specified interface.
 *
 * PARAMS
 *  riid   [I] Interface whose proxy/stub CLSID is to be returned.
 *  pclsid [O] Where to store returned proxy/stub CLSID.
 * 
 * RETURNS
 *   S_OK
 *   E_OUTOFMEMORY
 *   REGDB_E_IIDNOTREG if no PSFactoryBuffer is associated with the IID, or it could not be parsed
 *
 * NOTES
 *
 * The standard marshaller activates the object with the CLSID
 * returned and uses the CreateProxy and CreateStub methods on its
 * IPSFactoryBuffer interface to construct the proxies and stubs for a
 * given object.
 *
 * CoGetPSClsid determines this CLSID by searching the
 * HKEY_CLASSES_ROOT\Interface\{string form of riid}\ProxyStubClsid32
 * in the registry and any interface id registered by
 * CoRegisterPSClsid within the current process.
 *
 * BUGS
 *
 * Native returns S_OK for interfaces with a key in HKCR\Interface, but
 * without a ProxyStubClsid32 key and leaves garbage in pclsid. This should be
 * considered a bug in native unless an application depends on this (unlikely).
 *
 * SEE ALSO
 *  CoRegisterPSClsid.
 */
HRESULT WINAPI CoGetPSClsid(REFIID riid, CLSID *pclsid)
{
    static const WCHAR wszInterface[] = {'I','n','t','e','r','f','a','c','e','\\',0};
    static const WCHAR wszPSC[] = {'\\','P','r','o','x','y','S','t','u','b','C','l','s','i','d','3','2',0};
    WCHAR path[ARRAYSIZE(wszInterface) - 1 + CHARS_IN_GUID - 1 + ARRAYSIZE(wszPSC)];
    APARTMENT *apt = COM_CurrentApt();
    struct registered_psclsid *registered_psclsid;
    ACTCTX_SECTION_KEYED_DATA data;
    HRESULT hr;
    REGSAM opposite = (sizeof(void*) > sizeof(int)) ? KEY_WOW64_32KEY : KEY_WOW64_64KEY;
    BOOL is_wow64;

    TRACE("() riid=%s, pclsid=%p\n", debugstr_guid(riid), pclsid);

    if (!apt)
    {
        ERR("apartment not initialised\n");
        return CO_E_NOTINITIALIZED;
    }

    if (!pclsid)
        return E_INVALIDARG;

    EnterCriticalSection(&cs_registered_psclsid_list);

    LIST_FOR_EACH_ENTRY(registered_psclsid, &registered_psclsid_list, struct registered_psclsid, entry)
        if (IsEqualIID(&registered_psclsid->iid, riid))
        {
            *pclsid = registered_psclsid->clsid;
            LeaveCriticalSection(&cs_registered_psclsid_list);
            return S_OK;
        }

    LeaveCriticalSection(&cs_registered_psclsid_list);

    data.cbSize = sizeof(data);
    if (FindActCtxSectionGuid(0, NULL, ACTIVATION_CONTEXT_SECTION_COM_INTERFACE_REDIRECTION,
                              riid, &data))
    {
        struct ifacepsredirect_data *ifaceps = (struct ifacepsredirect_data*)data.lpData;
        *pclsid = ifaceps->iid;
        return S_OK;
    }

    /* Interface\\{string form of riid}\\ProxyStubClsid32 */
    strcpyW(path, wszInterface);
    StringFromGUID2(riid, path + ARRAYSIZE(wszInterface) - 1, CHARS_IN_GUID);
    strcpyW(path + ARRAYSIZE(wszInterface) - 1 + CHARS_IN_GUID - 1, wszPSC);

    hr = get_ps_clsid_from_registry(path, 0, pclsid);
    if (FAILED(hr) && (opposite == KEY_WOW64_32KEY ||
                       (IsWow64Process(GetCurrentProcess(), &is_wow64) && is_wow64)))
        hr = get_ps_clsid_from_registry(path, opposite, pclsid);

    if (hr == S_OK)
        TRACE ("() Returning CLSID=%s\n", debugstr_guid(pclsid));
    else
        WARN("No PSFactoryBuffer object is registered for IID %s\n", debugstr_guid(riid));

    return hr;
}

/*****************************************************************************
 *             CoRegisterPSClsid [OLE32.@]
 *
 * Register a proxy/stub CLSID for the given interface in the current process
 * only.
 *
 * PARAMS
 *  riid   [I] Interface whose proxy/stub CLSID is to be registered.
 *  rclsid [I] CLSID of the proxy/stub.
 * 
 * RETURNS
 *   Success: S_OK
 *   Failure: E_OUTOFMEMORY
 *
 * NOTES
 *
 * Unlike CoRegisterClassObject(), CLSIDs registered with CoRegisterPSClsid()
 * will be returned from other apartments in the same process.
 *
 * This function does not add anything to the registry and the effects are
 * limited to the lifetime of the current process.
 *
 * SEE ALSO
 *  CoGetPSClsid.
 */
HRESULT WINAPI CoRegisterPSClsid(REFIID riid, REFCLSID rclsid)
{
    APARTMENT *apt = COM_CurrentApt();
    struct registered_psclsid *registered_psclsid;

    TRACE("(%s, %s)\n", debugstr_guid(riid), debugstr_guid(rclsid));

    if (!apt)
    {
        ERR("apartment not initialised\n");
        return CO_E_NOTINITIALIZED;
    }

    EnterCriticalSection(&cs_registered_psclsid_list);

    LIST_FOR_EACH_ENTRY(registered_psclsid, &registered_psclsid_list, struct registered_psclsid, entry)
        if (IsEqualIID(&registered_psclsid->iid, riid))
        {
            registered_psclsid->clsid = *rclsid;
            LeaveCriticalSection(&cs_registered_psclsid_list);
            return S_OK;
        }

    registered_psclsid = HeapAlloc(GetProcessHeap(), 0, sizeof(struct registered_psclsid));
    if (!registered_psclsid)
    {
        LeaveCriticalSection(&cs_registered_psclsid_list);
        return E_OUTOFMEMORY;
    }

    registered_psclsid->iid = *riid;
    registered_psclsid->clsid = *rclsid;
    list_add_head(&registered_psclsid_list, &registered_psclsid->entry);

    LeaveCriticalSection(&cs_registered_psclsid_list);

    return S_OK;
}


/***
 * COM_GetRegisteredClassObject
 *
 * This internal method is used to scan the registered class list to
 * find a class object.
 *
 * Params:
 *   rclsid        Class ID of the class to find.
 *   dwClsContext  Class context to match.
 *   ppv           [out] returns a pointer to the class object. Complying
 *                 to normal COM usage, this method will increase the
 *                 reference count on this object.
 */
static HRESULT COM_GetRegisteredClassObject(const struct apartment *apt, REFCLSID rclsid,
                                            DWORD dwClsContext, LPUNKNOWN* ppUnk)
{
  HRESULT hr = S_FALSE;
  RegisteredClass *curClass;

  EnterCriticalSection( &csRegisteredClassList );

  LIST_FOR_EACH_ENTRY(curClass, &RegisteredClassList, RegisteredClass, entry)
  {
    /*
     * Check if we have a match on the class ID and context.
     */
    if ((apt->oxid == curClass->apartment_id) &&
        (dwClsContext & curClass->runContext) &&
        IsEqualGUID(&(curClass->classIdentifier), rclsid))
    {
      /*
       * We have a match, return the pointer to the class object.
       */
      *ppUnk = curClass->classObject;

      IUnknown_AddRef(curClass->classObject);

      hr = S_OK;
      break;
    }
  }

  LeaveCriticalSection( &csRegisteredClassList );

  return hr;
}

/******************************************************************************
 *              CoRegisterClassObject   [OLE32.@]
 *
 * Registers the class object for a given class ID. Servers housed in EXE
 * files use this method instead of exporting DllGetClassObject to allow
 * other code to connect to their objects.
 *
 * PARAMS
 *  rclsid       [I] CLSID of the object to register.
 *  pUnk         [I] IUnknown of the object.
 *  dwClsContext [I] CLSCTX flags indicating the context in which to run the executable.
 *  flags        [I] REGCLS flags indicating how connections are made.
 *  lpdwRegister [I] A unique cookie that can be passed to CoRevokeClassObject.
 *
 * RETURNS
 *   S_OK on success,
 *   E_INVALIDARG if lpdwRegister or pUnk are NULL,
 *   CO_E_OBJISREG if the object is already registered. We should not return this.
 *
 * SEE ALSO
 *   CoRevokeClassObject, CoGetClassObject
 *
 * NOTES
 *  In-process objects are only registered for the current apartment.
 *  CoGetClassObject() and CoCreateInstance() will not return objects registered
 *  in other apartments.
 *
 * BUGS
 *  MSDN claims that multiple interface registrations are legal, but we
 *  can't do that with our current implementation.
 */
HRESULT WINAPI CoRegisterClassObject(
    REFCLSID rclsid,
    LPUNKNOWN pUnk,
    DWORD dwClsContext,
    DWORD flags,
    LPDWORD lpdwRegister)
{
  static LONG next_cookie;
  RegisteredClass* newClass;
  LPUNKNOWN        foundObject;
  HRESULT          hr;
  APARTMENT *apt;

  TRACE("(%s,%p,0x%08x,0x%08x,%p)\n",
        debugstr_guid(rclsid),pUnk,dwClsContext,flags,lpdwRegister);

  if ( (lpdwRegister==0) || (pUnk==0) )
    return E_INVALIDARG;

  apt = COM_CurrentApt();
  if (!apt)
  {
      ERR("COM was not initialized\n");
      return CO_E_NOTINITIALIZED;
  }

  *lpdwRegister = 0;

  /* REGCLS_MULTIPLEUSE implies registering as inproc server. This is what
   * differentiates the flag from REGCLS_MULTI_SEPARATE. */
  if (flags & REGCLS_MULTIPLEUSE)
    dwClsContext |= CLSCTX_INPROC_SERVER;

  /*
   * First, check if the class is already registered.
   * If it is, this should cause an error.
   */
  hr = COM_GetRegisteredClassObject(apt, rclsid, dwClsContext, &foundObject);
  if (hr == S_OK) {
    if (flags & REGCLS_MULTIPLEUSE) {
      if (dwClsContext & CLSCTX_LOCAL_SERVER)
        hr = CoLockObjectExternal(foundObject, TRUE, FALSE);
      IUnknown_Release(foundObject);
      return hr;
    }
    IUnknown_Release(foundObject);
    ERR("object already registered for class %s\n", debugstr_guid(rclsid));
    return CO_E_OBJISREG;
  }

  newClass = HeapAlloc(GetProcessHeap(), 0, sizeof(RegisteredClass));
  if ( newClass == NULL )
    return E_OUTOFMEMORY;

  newClass->classIdentifier = *rclsid;
  newClass->apartment_id    = apt->oxid;
  newClass->runContext      = dwClsContext;
  newClass->connectFlags    = flags;
  newClass->RpcRegistration = NULL;

  if (!(newClass->dwCookie = InterlockedIncrement( &next_cookie )))
      newClass->dwCookie = InterlockedIncrement( &next_cookie );

  /*
   * Since we're making a copy of the object pointer, we have to increase its
   * reference count.
   */
  newClass->classObject     = pUnk;
  IUnknown_AddRef(newClass->classObject);

  EnterCriticalSection( &csRegisteredClassList );
  list_add_tail(&RegisteredClassList, &newClass->entry);
  LeaveCriticalSection( &csRegisteredClassList );

  *lpdwRegister = newClass->dwCookie;

  if (dwClsContext & CLSCTX_LOCAL_SERVER) {
      IStream *marshal_stream;

      hr = get_local_server_stream(apt, &marshal_stream);
      if(FAILED(hr))
          return hr;

      hr = RPC_StartLocalServer(&newClass->classIdentifier,
                                marshal_stream,
                                flags & (REGCLS_MULTIPLEUSE|REGCLS_MULTI_SEPARATE),
                                &newClass->RpcRegistration);
      IStream_Release(marshal_stream);
  }
  return S_OK;
}

static enum comclass_threadingmodel get_threading_model(const struct class_reg_data *data)
{
    if (data->hkey)
    {
        static const WCHAR wszThreadingModel[] = {'T','h','r','e','a','d','i','n','g','M','o','d','e','l',0};
        static const WCHAR wszApartment[] = {'A','p','a','r','t','m','e','n','t',0};
        static const WCHAR wszFree[] = {'F','r','e','e',0};
        static const WCHAR wszBoth[] = {'B','o','t','h',0};
        WCHAR threading_model[10 /* strlenW(L"apartment")+1 */];
        DWORD dwLength = sizeof(threading_model);
        DWORD keytype;
        DWORD ret;

        ret = RegQueryValueExW(data->u.hkey, wszThreadingModel, NULL, &keytype, (BYTE*)threading_model, &dwLength);
        if ((ret != ERROR_SUCCESS) || (keytype != REG_SZ))
            threading_model[0] = '\0';

        if (!strcmpiW(threading_model, wszApartment)) return ThreadingModel_Apartment;
        if (!strcmpiW(threading_model, wszFree)) return ThreadingModel_Free;
        if (!strcmpiW(threading_model, wszBoth)) return ThreadingModel_Both;

        /* there's not specific handling for this case */
        if (threading_model[0]) return ThreadingModel_Neutral;
        return ThreadingModel_No;
    }
    else
        return data->u.actctx.data->model;
}

static HRESULT get_inproc_class_object(APARTMENT *apt, const struct class_reg_data *regdata,
                                       REFCLSID rclsid, REFIID riid,
                                       BOOL hostifnecessary, void **ppv)
{
    WCHAR dllpath[MAX_PATH+1];
    BOOL apartment_threaded;

    if (hostifnecessary)
    {
        enum comclass_threadingmodel model = get_threading_model(regdata);

        if (model == ThreadingModel_Apartment)
        {
            apartment_threaded = TRUE;
            if (apt->multi_threaded)
                return apartment_hostobject_in_hostapt(apt, FALSE, FALSE, regdata, rclsid, riid, ppv);
        }
        else if (model == ThreadingModel_Free)
        {
            apartment_threaded = FALSE;
            if (!apt->multi_threaded)
                return apartment_hostobject_in_hostapt(apt, TRUE, FALSE, regdata, rclsid, riid, ppv);
        }
        /* everything except "Apartment", "Free" and "Both" */
        else if (model != ThreadingModel_Both)
        {
            apartment_threaded = TRUE;
            /* everything else is main-threaded */
            if (model != ThreadingModel_No)
                FIXME("unrecognised threading model %d for object %s, should be main-threaded?\n", model, debugstr_guid(rclsid));

            if (apt->multi_threaded || !apt->main)
                return apartment_hostobject_in_hostapt(apt, FALSE, TRUE, regdata, rclsid, riid, ppv);
        }
        else
            apartment_threaded = FALSE;
    }
    else
        apartment_threaded = !apt->multi_threaded;

    if (COM_RegReadPath(regdata, dllpath, ARRAYSIZE(dllpath)) != ERROR_SUCCESS)
    {
        /* failure: CLSID is not found in registry */
        WARN("class %s not registered inproc\n", debugstr_guid(rclsid));
        return REGDB_E_CLASSNOTREG;
    }

    return apartment_getclassobject(apt, dllpath, apartment_threaded,
                                    rclsid, riid, ppv);
}

/***********************************************************************
 *           CoGetClassObject [OLE32.@]
 *
 * Creates an object of the specified class.
 *
 * PARAMS
 *  rclsid       [I] Class ID to create an instance of.
 *  dwClsContext [I] Flags to restrict the location of the created instance.
 *  pServerInfo  [I] Optional. Details for connecting to a remote server.
 *  iid          [I] The ID of the interface of the instance to return.
 *  ppv          [O] On returns, contains a pointer to the specified interface of the object.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: HRESULT code.
 *
 * NOTES
 *  The dwClsContext parameter can be one or more of the following:
 *| CLSCTX_INPROC_SERVER - Use an in-process server, such as from a DLL.
 *| CLSCTX_INPROC_HANDLER - Use an in-process object which handles certain functions for an object running in another process.
 *| CLSCTX_LOCAL_SERVER - Connect to an object running in another process.
 *| CLSCTX_REMOTE_SERVER - Connect to an object running on another machine.
 *
 * SEE ALSO
 *  CoCreateInstance()
 */
HRESULT WINAPI DECLSPEC_HOTPATCH CoGetClassObject(
    REFCLSID rclsid, DWORD dwClsContext, COSERVERINFO *pServerInfo,
    REFIID iid, LPVOID *ppv)
{
    struct class_reg_data clsreg;
    IUnknown *regClassObject;
    HRESULT     hres = E_UNEXPECTED;
    APARTMENT  *apt;
    BOOL release_apt = FALSE;

    TRACE("CLSID: %s,IID: %s\n", debugstr_guid(rclsid), debugstr_guid(iid));

    if (!ppv)
        return E_INVALIDARG;

    *ppv = NULL;

    if (!(apt = COM_CurrentApt()))
    {
        if (!(apt = apartment_find_multi_threaded()))
        {
            ERR("apartment not initialised\n");
            return CO_E_NOTINITIALIZED;
        }
        release_apt = TRUE;
    }

    if (pServerInfo) {
        FIXME("pServerInfo->name=%s pAuthInfo=%p\n",
              debugstr_w(pServerInfo->pwszName), pServerInfo->pAuthInfo);
    }

    if (CLSCTX_INPROC_SERVER & dwClsContext)
    {
        if (IsEqualCLSID(rclsid, &CLSID_InProcFreeMarshaler))
        {
            if (release_apt) apartment_release(apt);
            return FTMarshalCF_Create(iid, ppv);
        }
        if (IsEqualCLSID(rclsid, &CLSID_GlobalOptions))
            return IClassFactory_QueryInterface(&GlobalOptionsCF, iid, ppv);
    }

    if (CLSCTX_INPROC & dwClsContext)
    {
        ACTCTX_SECTION_KEYED_DATA data;

        data.cbSize = sizeof(data);
        /* search activation context first */
        if (FindActCtxSectionGuid(FIND_ACTCTX_SECTION_KEY_RETURN_HACTCTX, NULL,
                                  ACTIVATION_CONTEXT_SECTION_COM_SERVER_REDIRECTION,
                                  rclsid, &data))
        {
            struct comclassredirect_data *comclass = (struct comclassredirect_data*)data.lpData;

            clsreg.u.actctx.hactctx = data.hActCtx;
            clsreg.u.actctx.data = data.lpData;
            clsreg.u.actctx.section = data.lpSectionBase;
            clsreg.hkey = FALSE;

            hres = get_inproc_class_object(apt, &clsreg, &comclass->clsid, iid, !(dwClsContext & WINE_CLSCTX_DONT_HOST), ppv);
            ReleaseActCtx(data.hActCtx);
            if (release_apt) apartment_release(apt);
            return hres;
        }
    }

    /*
     * First, try and see if we can't match the class ID with one of the
     * registered classes.
     */
    if (S_OK == COM_GetRegisteredClassObject(apt, rclsid, dwClsContext,
                                             &regClassObject))
    {
      /* Get the required interface from the retrieved pointer. */
      hres = IUnknown_QueryInterface(regClassObject, iid, ppv);

      /*
       * Since QI got another reference on the pointer, we want to release the
       * one we already have. If QI was unsuccessful, this will release the object. This
       * is good since we are not returning it in the "out" parameter.
       */
      IUnknown_Release(regClassObject);
      if (release_apt) apartment_release(apt);
      return hres;
    }

    /* First try in-process server */
    if (CLSCTX_INPROC_SERVER & dwClsContext)
    {
        static const WCHAR wszInprocServer32[] = {'I','n','p','r','o','c','S','e','r','v','e','r','3','2',0};
        HKEY hkey;

        hres = COM_OpenKeyForCLSID(rclsid, wszInprocServer32, KEY_READ, &hkey);
        if (FAILED(hres))
        {
            if (hres == REGDB_E_CLASSNOTREG)
                ERR("class %s not registered\n", debugstr_guid(rclsid));
            else if (hres == REGDB_E_KEYMISSING)
            {
                WARN("class %s not registered as in-proc server\n", debugstr_guid(rclsid));
                hres = REGDB_E_CLASSNOTREG;
            }
        }

        if (SUCCEEDED(hres))
        {
            clsreg.u.hkey = hkey;
            clsreg.hkey = TRUE;

            hres = get_inproc_class_object(apt, &clsreg, rclsid, iid, !(dwClsContext & WINE_CLSCTX_DONT_HOST), ppv);
            RegCloseKey(hkey);
        }

        /* return if we got a class, otherwise fall through to one of the
         * other types */
        if (SUCCEEDED(hres))
        {
            if (release_apt) apartment_release(apt);
            return hres;
        }
    }

    /* Next try in-process handler */
    if (CLSCTX_INPROC_HANDLER & dwClsContext)
    {
        static const WCHAR wszInprocHandler32[] = {'I','n','p','r','o','c','H','a','n','d','l','e','r','3','2',0};
        HKEY hkey;

        hres = COM_OpenKeyForCLSID(rclsid, wszInprocHandler32, KEY_READ, &hkey);
        if (FAILED(hres))
        {
            if (hres == REGDB_E_CLASSNOTREG)
                ERR("class %s not registered\n", debugstr_guid(rclsid));
            else if (hres == REGDB_E_KEYMISSING)
            {
                WARN("class %s not registered in-proc handler\n", debugstr_guid(rclsid));
                hres = REGDB_E_CLASSNOTREG;
            }
        }

        if (SUCCEEDED(hres))
        {
            clsreg.u.hkey = hkey;
            clsreg.hkey = TRUE;

            hres = get_inproc_class_object(apt, &clsreg, rclsid, iid, !(dwClsContext & WINE_CLSCTX_DONT_HOST), ppv);
            RegCloseKey(hkey);
        }

        /* return if we got a class, otherwise fall through to one of the
         * other types */
        if (SUCCEEDED(hres))
        {
            if (release_apt) apartment_release(apt);
            return hres;
        }
    }
    if (release_apt) apartment_release(apt);

    /* Next try out of process */
    if (CLSCTX_LOCAL_SERVER & dwClsContext)
    {
        hres = RPC_GetLocalClassObject(rclsid,iid,ppv);
        if (SUCCEEDED(hres))
            return hres;
    }

    /* Finally try remote: this requires networked DCOM (a lot of work) */
    if (CLSCTX_REMOTE_SERVER & dwClsContext)
    {
        FIXME ("CLSCTX_REMOTE_SERVER not supported\n");
        hres = REGDB_E_CLASSNOTREG;
    }

    if (FAILED(hres))
        ERR("no class object %s could be created for context 0x%x\n",
            debugstr_guid(rclsid), dwClsContext);
    return hres;
}

/***********************************************************************
 *        CoResumeClassObjects (OLE32.@)
 *
 * Resumes all class objects registered with REGCLS_SUSPENDED.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoResumeClassObjects(void)
{
       FIXME("stub\n");
        return S_OK;
}

/***********************************************************************
 *           CoCreateInstance [OLE32.@]
 *
 * Creates an instance of the specified class.
 *
 * PARAMS
 *  rclsid       [I] Class ID to create an instance of.
 *  pUnkOuter    [I] Optional outer unknown to allow aggregation with another object.
 *  dwClsContext [I] Flags to restrict the location of the created instance.
 *  iid          [I] The ID of the interface of the instance to return.
 *  ppv          [O] On returns, contains a pointer to the specified interface of the instance.
 *
 * RETURNS
 *  Success: S_OK
 *  Failure: HRESULT code.
 *
 * NOTES
 *  The dwClsContext parameter can be one or more of the following:
 *| CLSCTX_INPROC_SERVER - Use an in-process server, such as from a DLL.
 *| CLSCTX_INPROC_HANDLER - Use an in-process object which handles certain functions for an object running in another process.
 *| CLSCTX_LOCAL_SERVER - Connect to an object running in another process.
 *| CLSCTX_REMOTE_SERVER - Connect to an object running on another machine.
 *
 * Aggregation is the concept of deferring the IUnknown of an object to another
 * object. This allows a separate object to behave as though it was part of
 * the object and to allow this the pUnkOuter parameter can be set. Note that
 * not all objects support having an outer of unknown.
 *
 * SEE ALSO
 *  CoGetClassObject()
 */
HRESULT WINAPI DECLSPEC_HOTPATCH CoCreateInstance(
    REFCLSID rclsid,
    LPUNKNOWN pUnkOuter,
    DWORD dwClsContext,
    REFIID iid,
    LPVOID *ppv)
{
    MULTI_QI multi_qi = { iid };
    HRESULT hres;

    TRACE("(rclsid=%s, pUnkOuter=%p, dwClsContext=%08x, riid=%s, ppv=%p)\n", debugstr_guid(rclsid),
          pUnkOuter, dwClsContext, debugstr_guid(iid), ppv);

    if (ppv==0)
        return E_POINTER;

    hres = CoCreateInstanceEx(rclsid, pUnkOuter, dwClsContext, NULL, 1, &multi_qi);
    *ppv = multi_qi.pItf;
    return hres;
}

static void init_multi_qi(DWORD count, MULTI_QI *mqi, HRESULT hr)
{
  ULONG i;

  for (i = 0; i < count; i++)
  {
      mqi[i].pItf = NULL;
      mqi[i].hr = hr;
  }
}

static HRESULT return_multi_qi(IUnknown *unk, DWORD count, MULTI_QI *mqi, BOOL include_unk)
{
  ULONG index = 0, fetched = 0;

  if (include_unk)
  {
    mqi[0].hr = S_OK;
    mqi[0].pItf = unk;
    index = fetched = 1;
  }

  for (; index < count; index++)
  {
    mqi[index].hr = IUnknown_QueryInterface(unk, mqi[index].pIID, (void**)&mqi[index].pItf);
    if (mqi[index].hr == S_OK)
      fetched++;
  }

  if (!include_unk)
      IUnknown_Release(unk);

  if (fetched == 0)
    return E_NOINTERFACE;

  return fetched == count ? S_OK : CO_S_NOTALLINTERFACES;
}

/***********************************************************************
 *           CoCreateInstanceEx [OLE32.@]
 */
HRESULT WINAPI DECLSPEC_HOTPATCH CoCreateInstanceEx(
  REFCLSID      rclsid,
  LPUNKNOWN     pUnkOuter,
  DWORD         dwClsContext,
  COSERVERINFO* pServerInfo,
  ULONG         cmq,
  MULTI_QI*     pResults)
{
    IUnknown *unk = NULL;
    IClassFactory *cf;
    APARTMENT *apt;
    CLSID clsid;
    HRESULT hres;

    TRACE("(%s %p %x %p %u %p)\n", debugstr_guid(rclsid), pUnkOuter, dwClsContext, pServerInfo, cmq, pResults);

    if (!cmq || !pResults)
        return E_INVALIDARG;

    if (pServerInfo)
        FIXME("() non-NULL pServerInfo not supported!\n");

    init_multi_qi(cmq, pResults, E_NOINTERFACE);

    hres = CoGetTreatAsClass(rclsid, &clsid);
    if(FAILED(hres))
        clsid = *rclsid;

    if (!(apt = COM_CurrentApt()))
    {
        if (!(apt = apartment_find_multi_threaded()))
        {
            ERR("apartment not initialised\n");
            return CO_E_NOTINITIALIZED;
        }
        apartment_release(apt);
    }

    /*
     * The Standard Global Interface Table (GIT) object is a process-wide singleton.
     */
    if (IsEqualIID(&clsid, &CLSID_StdGlobalInterfaceTable))
    {
        IGlobalInterfaceTable *git = get_std_git();
        TRACE("Retrieving GIT\n");
        return return_multi_qi((IUnknown*)git, cmq, pResults, FALSE);
    }

    if (IsEqualCLSID(&clsid, &CLSID_ManualResetEvent)) {
        hres = ManualResetEvent_Construct(pUnkOuter, pResults[0].pIID, (void**)&unk);
        if (FAILED(hres))
            return hres;
        return return_multi_qi(unk, cmq, pResults, TRUE);
    }

    /*
     * Get a class factory to construct the object we want.
     */
    hres = CoGetClassObject(&clsid, dwClsContext, NULL, &IID_IClassFactory, (void**)&cf);
    if (FAILED(hres))
        return hres;

    /*
     * Create the object and don't forget to release the factory
     */
    hres = IClassFactory_CreateInstance(cf, pUnkOuter, pResults[0].pIID, (void**)&unk);
    IClassFactory_Release(cf);
    if (FAILED(hres))
    {
        if (hres == CLASS_E_NOAGGREGATION && pUnkOuter)
            FIXME("Class %s does not support aggregation\n", debugstr_guid(&clsid));
        else
            FIXME("no instance created for interface %s of class %s, hres is 0x%08x\n",
                  debugstr_guid(pResults[0].pIID),
                  debugstr_guid(&clsid),hres);
        return hres;
    }

    return return_multi_qi(unk, cmq, pResults, TRUE);
}

/***********************************************************************
 *           CoGetInstanceFromFile [OLE32.@]
 */
HRESULT WINAPI DECLSPEC_HOTPATCH CoGetInstanceFromFile(
  COSERVERINFO *server_info,
  CLSID        *rclsid,
  IUnknown     *outer,
  DWORD         cls_context,
  DWORD         grfmode,
  OLECHAR      *filename,
  DWORD         count,
  MULTI_QI     *results
)
{
  IPersistFile *pf = NULL;
  IUnknown* unk = NULL;
  CLSID clsid;
  HRESULT hr;

  if (count == 0 || !results)
    return E_INVALIDARG;

  if (server_info)
    FIXME("() non-NULL server_info not supported\n");

  init_multi_qi(count, results, E_NOINTERFACE);

  /* optionally get CLSID from a file */
  if (!rclsid)
  {
    hr = GetClassFile(filename, &clsid);
    if (FAILED(hr))
    {
      ERR("failed to get CLSID from a file\n");
      return hr;
    }

    rclsid = &clsid;
  }

  hr = CoCreateInstance(rclsid,
                        outer,
                        cls_context,
                        &IID_IUnknown,
                        (void**)&unk);

  if (hr != S_OK)
  {
      init_multi_qi(count, results, hr);
      return hr;
  }

  /* init from file */
  hr = IUnknown_QueryInterface(unk, &IID_IPersistFile, (void**)&pf);
  if (FAILED(hr))
  {
      init_multi_qi(count, results, hr);
      IUnknown_Release(unk);
      return hr;
  }

  hr = IPersistFile_Load(pf, filename, grfmode);
  IPersistFile_Release(pf);
  if (SUCCEEDED(hr))
      return return_multi_qi(unk, count, results, FALSE);
  else
  {
      init_multi_qi(count, results, hr);
      IUnknown_Release(unk);
      return hr;
  }
}

/***********************************************************************
 *           CoGetInstanceFromIStorage [OLE32.@]
 */
HRESULT WINAPI CoGetInstanceFromIStorage(
  COSERVERINFO *server_info,
  CLSID        *rclsid,
  IUnknown     *outer,
  DWORD         cls_context,
  IStorage     *storage,
  DWORD         count,
  MULTI_QI     *results
)
{
  IPersistStorage *ps = NULL;
  IUnknown* unk = NULL;
  STATSTG stat;
  HRESULT hr;

  if (count == 0 || !results || !storage)
    return E_INVALIDARG;

  if (server_info)
    FIXME("() non-NULL server_info not supported\n");

  init_multi_qi(count, results, E_NOINTERFACE);

  /* optionally get CLSID from a file */
  if (!rclsid)
  {
    memset(&stat.clsid, 0, sizeof(stat.clsid));
    hr = IStorage_Stat(storage, &stat, STATFLAG_NONAME);
    if (FAILED(hr))
    {
      ERR("failed to get CLSID from a file\n");
      return hr;
    }

    rclsid = &stat.clsid;
  }

  hr = CoCreateInstance(rclsid,
                        outer,
                        cls_context,
                        &IID_IUnknown,
                        (void**)&unk);

  if (hr != S_OK)
    return hr;

  /* init from IStorage */
  hr = IUnknown_QueryInterface(unk, &IID_IPersistStorage, (void**)&ps);
  if (FAILED(hr))
      ERR("failed to get IPersistStorage\n");

  if (ps)
  {
      IPersistStorage_Load(ps, storage);
      IPersistStorage_Release(ps);
  }

  return return_multi_qi(unk, count, results, FALSE);
}

/***********************************************************************
 *           CoLoadLibrary (OLE32.@)
 *
 * Loads a library.
 *
 * PARAMS
 *  lpszLibName [I] Path to library.
 *  bAutoFree   [I] Whether the library should automatically be freed.
 *
 * RETURNS
 *  Success: Handle to loaded library.
 *  Failure: NULL.
 *
 * SEE ALSO
 *  CoFreeLibrary, CoFreeAllLibraries, CoFreeUnusedLibraries
 */
HINSTANCE WINAPI CoLoadLibrary(LPOLESTR lpszLibName, BOOL bAutoFree)
{
    TRACE("(%s, %d)\n", debugstr_w(lpszLibName), bAutoFree);

    return LoadLibraryExW(lpszLibName, 0, LOAD_WITH_ALTERED_SEARCH_PATH);
}

/***********************************************************************
 *           CoFreeLibrary [OLE32.@]
 *
 * Unloads a library from memory.
 *
 * PARAMS
 *  hLibrary [I] Handle to library to unload.
 *
 * RETURNS
 *  Nothing
 *
 * SEE ALSO
 *  CoLoadLibrary, CoFreeAllLibraries, CoFreeUnusedLibraries
 */
void WINAPI CoFreeLibrary(HINSTANCE hLibrary)
{
    FreeLibrary(hLibrary);
}


/***********************************************************************
 *           CoFreeAllLibraries [OLE32.@]
 *
 * Function for backwards compatibility only. Does nothing.
 *
 * RETURNS
 *  Nothing.
 *
 * SEE ALSO
 *  CoLoadLibrary, CoFreeLibrary, CoFreeUnusedLibraries
 */
void WINAPI CoFreeAllLibraries(void)
{
    /* NOP */
}

/***********************************************************************
 *           CoFreeUnusedLibrariesEx [OLE32.@]
 *
 * Frees any previously unused libraries whose delay has expired and marks
 * currently unused libraries for unloading. Unused are identified as those that
 * return S_OK from their DllCanUnloadNow function.
 *
 * PARAMS
 *  dwUnloadDelay [I] Unload delay in milliseconds.
 *  dwReserved    [I] Reserved. Set to 0.
 *
 * RETURNS
 *  Nothing.
 *
 * SEE ALSO
 *  CoLoadLibrary, CoFreeAllLibraries, CoFreeLibrary
 */
void WINAPI DECLSPEC_HOTPATCH CoFreeUnusedLibrariesEx(DWORD dwUnloadDelay, DWORD dwReserved)
{
    struct apartment *apt = COM_CurrentApt();
    if (!apt)
    {
        ERR("apartment not initialised\n");
        return;
    }

    apartment_freeunusedlibraries(apt, dwUnloadDelay);
}

/***********************************************************************
 *           CoFreeUnusedLibraries [OLE32.@]
 *
 * Frees any unused libraries. Unused are identified as those that return
 * S_OK from their DllCanUnloadNow function.
 *
 * RETURNS
 *  Nothing.
 *
 * SEE ALSO
 *  CoLoadLibrary, CoFreeAllLibraries, CoFreeLibrary
 */
void WINAPI DECLSPEC_HOTPATCH CoFreeUnusedLibraries(void)
{
    CoFreeUnusedLibrariesEx(INFINITE, 0);
}

/***********************************************************************
 *           CoFileTimeNow [OLE32.@]
 *
 * Retrieves the current time in FILETIME format.
 *
 * PARAMS
 *  lpFileTime [O] The current time.
 *
 * RETURNS
 *      S_OK.
 */
HRESULT WINAPI CoFileTimeNow( FILETIME *lpFileTime )
{
    GetSystemTimeAsFileTime( lpFileTime );
    return S_OK;
}

/******************************************************************************
 *              CoLockObjectExternal    [OLE32.@]
 *
 * Increments or decrements the external reference count of a stub object.
 *
 * PARAMS
 *  pUnk                [I] Stub object.
 *  fLock               [I] If TRUE then increments the external ref-count,
 *                          otherwise decrements.
 *  fLastUnlockReleases [I] If TRUE then the last unlock has the effect of
 *                          calling CoDisconnectObject.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * NOTES
 *  If fLock is TRUE and an object is passed in that doesn't have a stub
 *  manager then a new stub manager is created for the object.
 */
HRESULT WINAPI CoLockObjectExternal(
    LPUNKNOWN pUnk,
    BOOL fLock,
    BOOL fLastUnlockReleases)
{
    struct stub_manager *stubmgr;
    struct apartment *apt;

    TRACE("pUnk=%p, fLock=%s, fLastUnlockReleases=%s\n",
          pUnk, fLock ? "TRUE" : "FALSE", fLastUnlockReleases ? "TRUE" : "FALSE");

    apt = COM_CurrentApt();
    if (!apt) return CO_E_NOTINITIALIZED;

    stubmgr = get_stub_manager_from_object(apt, pUnk, fLock);
    if (!stubmgr)
    {
        WARN("stub object not found %p\n", pUnk);
        /* Note: native is pretty broken here because it just silently
         * fails, without returning an appropriate error code, making apps
         * think that the object was disconnected, when it actually wasn't */
        return S_OK;
    }

    if (fLock)
        stub_manager_ext_addref(stubmgr, 1, FALSE);
    else
        stub_manager_ext_release(stubmgr, 1, FALSE, fLastUnlockReleases);

    stub_manager_int_release(stubmgr);
    return S_OK;
}

/***********************************************************************
 *           CoInitializeWOW (OLE32.@)
 *
 * WOW equivalent of CoInitialize?
 *
 * PARAMS
 *  x [I] Unknown.
 *  y [I] Unknown.
 *
 * RETURNS
 *  Unknown.
 */
HRESULT WINAPI CoInitializeWOW(DWORD x,DWORD y)
{
    FIXME("(0x%08x,0x%08x),stub!\n",x,y);
    return 0;
}

/***********************************************************************
 *           CoGetState [OLE32.@]
 *
 * Retrieves the thread state object previously stored by CoSetState().
 *
 * PARAMS
 *  ppv [I] Address where pointer to object will be stored.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: E_OUTOFMEMORY.
 *
 * NOTES
 *  Crashes on all invalid ppv addresses, including NULL.
 *  If the function returns a non-NULL object then the caller must release its
 *  reference on the object when the object is no longer required.
 *
 * SEE ALSO
 *  CoSetState().
 */
HRESULT WINAPI CoGetState(IUnknown ** ppv)
{
    struct oletls *info = COM_CurrentInfo();
    if (!info) return E_OUTOFMEMORY;

    *ppv = NULL;

    if (info->state)
    {
        IUnknown_AddRef(info->state);
        *ppv = info->state;
        TRACE("apt->state=%p\n", info->state);
    }

    return S_OK;
}

/***********************************************************************
 *           CoSetState [OLE32.@]
 *
 * Sets the thread state object.
 *
 * PARAMS
 *  pv [I] Pointer to state object to be stored.
 *
 * NOTES
 *  The system keeps a reference on the object while the object stored.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: E_OUTOFMEMORY.
 */
HRESULT WINAPI CoSetState(IUnknown * pv)
{
    struct oletls *info = COM_CurrentInfo();
    if (!info) return E_OUTOFMEMORY;

    if (pv) IUnknown_AddRef(pv);

    if (info->state)
    {
        TRACE("-- release %p now\n", info->state);
        IUnknown_Release(info->state);
    }

    info->state = pv;

    return S_OK;
}


/******************************************************************************
 *              CoTreatAsClass        [OLE32.@]
 *
 * Sets the TreatAs value of a class.
 *
 * PARAMS
 *  clsidOld [I] Class to set TreatAs value on.
 *  clsidNew [I] The class the clsidOld should be treated as.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoGetTreatAsClass
 */
HRESULT WINAPI CoTreatAsClass(REFCLSID clsidOld, REFCLSID clsidNew)
{
    static const WCHAR wszAutoTreatAs[] = {'A','u','t','o','T','r','e','a','t','A','s',0};
    static const WCHAR wszTreatAs[] = {'T','r','e','a','t','A','s',0};
    HKEY hkey = NULL;
    WCHAR szClsidNew[CHARS_IN_GUID];
    HRESULT res = S_OK;
    WCHAR auto_treat_as[CHARS_IN_GUID];
    LONG auto_treat_as_size = sizeof(auto_treat_as);
    CLSID id;

    res = COM_OpenKeyForCLSID(clsidOld, NULL, KEY_READ | KEY_WRITE, &hkey);
    if (FAILED(res))
        goto done;

    if (IsEqualGUID( clsidOld, clsidNew ))
    {
       if (!RegQueryValueW(hkey, wszAutoTreatAs, auto_treat_as, &auto_treat_as_size) &&
           CLSIDFromString(auto_treat_as, &id) == S_OK)
       {
           if (RegSetValueW(hkey, wszTreatAs, REG_SZ, auto_treat_as, sizeof(auto_treat_as)))
           {
               res = REGDB_E_WRITEREGDB;
               goto done;
           }
       }
       else
       {
           if(RegDeleteKeyW(hkey, wszTreatAs))
               res = REGDB_E_WRITEREGDB;
           goto done;
       }
    }
    else
    {
        if(IsEqualGUID(clsidNew, &CLSID_NULL)){
           RegDeleteKeyW(hkey, wszTreatAs);
        }else{
            if(!StringFromGUID2(clsidNew, szClsidNew, ARRAYSIZE(szClsidNew))){
                WARN("StringFromGUID2 failed\n");
                res = E_FAIL;
                goto done;
            }

            if(RegSetValueW(hkey, wszTreatAs, REG_SZ, szClsidNew, sizeof(szClsidNew)) != ERROR_SUCCESS){
                WARN("RegSetValue failed\n");
                res = REGDB_E_WRITEREGDB;
                goto done;
            }
        }
    }

done:
    if (hkey) RegCloseKey(hkey);
    return res;
}

/******************************************************************************
 *              CoGetTreatAsClass        [OLE32.@]
 *
 * Gets the TreatAs value of a class.
 *
 * PARAMS
 *  clsidOld [I] Class to get the TreatAs value of.
 *  clsidNew [I] The class the clsidOld should be treated as.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoSetTreatAsClass
 */
HRESULT WINAPI CoGetTreatAsClass(REFCLSID clsidOld, LPCLSID clsidNew)
{
    static const WCHAR wszTreatAs[] = {'T','r','e','a','t','A','s',0};
    HKEY hkey = NULL;
    WCHAR szClsidNew[CHARS_IN_GUID];
    HRESULT res = S_OK;
    LONG len = sizeof(szClsidNew);

    TRACE("(%s,%p)\n", debugstr_guid(clsidOld), clsidNew);

    if (!clsidOld || !clsidNew)
        return E_INVALIDARG;

    *clsidNew = *clsidOld; /* copy over old value */

    res = COM_OpenKeyForCLSID(clsidOld, wszTreatAs, KEY_READ, &hkey);
    if (FAILED(res))
    {
        res = S_FALSE;
        goto done;
    }
    if (RegQueryValueW(hkey, NULL, szClsidNew, &len))
    {
        res = S_FALSE;
        goto done;
    }
    res = CLSIDFromString(szClsidNew,clsidNew);
    if (FAILED(res))
        ERR("Failed CLSIDFromStringA(%s), hres 0x%08x\n", debugstr_w(szClsidNew), res);
done:
    if (hkey) RegCloseKey(hkey);
    return res;
}

/******************************************************************************
 *              CoGetCurrentProcess     [OLE32.@]
 *
 * Gets the current process ID.
 *
 * RETURNS
 *  The current process ID.
 *
 * NOTES
 *   Is DWORD really the correct return type for this function?
 */
DWORD WINAPI CoGetCurrentProcess(void)
{
        return GetCurrentProcessId();
}

/***********************************************************************
 *              CoGetCurrentLogicalThreadId        [OLE32.@]
 */
HRESULT WINAPI CoGetCurrentLogicalThreadId(GUID *id)
{
    TRACE("(%p)\n", id);

    if (!id)
        return E_INVALIDARG;

    *id = COM_CurrentCausalityId();
    return S_OK;
}

/******************************************************************************
 *              CoRegisterMessageFilter [OLE32.@]
 *
 * Registers a message filter.
 *
 * PARAMS
 *  lpMessageFilter [I] Pointer to interface.
 *  lplpMessageFilter [O] Indirect pointer to prior instance if non-NULL.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * NOTES
 *  Both lpMessageFilter and lplpMessageFilter are optional. Passing in a NULL
 *  lpMessageFilter removes the message filter.
 *
 *  If lplpMessageFilter is not NULL the previous message filter will be
 *  returned in the memory pointer to this parameter and the caller is
 *  responsible for releasing the object.
 *
 *  The current thread be in an apartment otherwise the function will crash.
 */
HRESULT WINAPI CoRegisterMessageFilter(
    LPMESSAGEFILTER lpMessageFilter,
    LPMESSAGEFILTER *lplpMessageFilter)
{
    struct apartment *apt;
    IMessageFilter *lpOldMessageFilter;

    TRACE("(%p, %p)\n", lpMessageFilter, lplpMessageFilter);

    apt = COM_CurrentApt();

    /* can't set a message filter in a multi-threaded apartment */
    if (!apt || apt->multi_threaded)
    {
        WARN("can't set message filter in MTA or uninitialized apt\n");
        return CO_E_NOT_SUPPORTED;
    }

    if (lpMessageFilter)
        IMessageFilter_AddRef(lpMessageFilter);

    EnterCriticalSection(&apt->cs);

    lpOldMessageFilter = apt->filter;
    apt->filter = lpMessageFilter;

    LeaveCriticalSection(&apt->cs);

    if (lplpMessageFilter)
        *lplpMessageFilter = lpOldMessageFilter;
    else if (lpOldMessageFilter)
        IMessageFilter_Release(lpOldMessageFilter);

    return S_OK;
}

/***********************************************************************
 *           CoIsOle1Class [OLE32.@]
 *
 * Determines whether the specified class an OLE v1 class.
 *
 * PARAMS
 *  clsid [I] Class to test.
 *
 * RETURNS
 *  TRUE if the class is an OLE v1 class, or FALSE otherwise.
 */
BOOL WINAPI CoIsOle1Class(REFCLSID clsid)
{
  FIXME("%s\n", debugstr_guid(clsid));
  return FALSE;
}

/***********************************************************************
 *           IsEqualGUID [OLE32.@]
 *
 * Compares two Unique Identifiers.
 *
 * PARAMS
 *  rguid1 [I] The first GUID to compare.
 *  rguid2 [I] The other GUID to compare.
 *
 * RETURNS
 *      TRUE if equal
 */
#undef IsEqualGUID
BOOL WINAPI IsEqualGUID(
     REFGUID rguid1,
     REFGUID rguid2)
{
    return !memcmp(rguid1,rguid2,sizeof(GUID));
}

/***********************************************************************
 *           CoInitializeSecurity [OLE32.@]
 */
HRESULT WINAPI CoInitializeSecurity(PSECURITY_DESCRIPTOR pSecDesc, LONG cAuthSvc,
                                    SOLE_AUTHENTICATION_SERVICE* asAuthSvc,
                                    void* pReserved1, DWORD dwAuthnLevel,
                                    DWORD dwImpLevel, void* pReserved2,
                                    DWORD dwCapabilities, void* pReserved3)
{
  FIXME("(%p,%d,%p,%p,%d,%d,%p,%d,%p) - stub!\n", pSecDesc, cAuthSvc,
        asAuthSvc, pReserved1, dwAuthnLevel, dwImpLevel, pReserved2,
        dwCapabilities, pReserved3);
  return S_OK;
}

/***********************************************************************
 *           CoSuspendClassObjects [OLE32.@]
 *
 * Suspends all registered class objects to prevent further requests coming in
 * for those objects.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoSuspendClassObjects(void)
{
    FIXME("\n");
    return S_OK;
}

/***********************************************************************
 *           CoAddRefServerProcess [OLE32.@]
 *
 * Helper function for incrementing the reference count of a local-server
 * process.
 *
 * RETURNS
 *  New reference count.
 *
 * SEE ALSO
 *  CoReleaseServerProcess().
 */
ULONG WINAPI CoAddRefServerProcess(void)
{
    ULONG refs;

    TRACE("\n");

    EnterCriticalSection(&csRegisteredClassList);
    refs = ++s_COMServerProcessReferences;
    LeaveCriticalSection(&csRegisteredClassList);

    TRACE("refs before: %d\n", refs - 1);

    return refs;
}

/***********************************************************************
 *           CoReleaseServerProcess [OLE32.@]
 *
 * Helper function for decrementing the reference count of a local-server
 * process.
 *
 * RETURNS
 *  New reference count.
 *
 * NOTES
 *  When reference count reaches 0, this function suspends all registered
 *  classes so no new connections are accepted.
 *
 * SEE ALSO
 *  CoAddRefServerProcess(), CoSuspendClassObjects().
 */
ULONG WINAPI CoReleaseServerProcess(void)
{
    ULONG refs;

    TRACE("\n");

    EnterCriticalSection(&csRegisteredClassList);

    refs = --s_COMServerProcessReferences;
    /* FIXME: if (!refs) COM_SuspendClassObjects(); */

    LeaveCriticalSection(&csRegisteredClassList);

    TRACE("refs after: %d\n", refs);

    return refs;
}

/***********************************************************************
 *           CoIsHandlerConnected [OLE32.@]
 *
 * Determines whether a proxy is connected to a remote stub.
 *
 * PARAMS
 *  pUnk [I] Pointer to object that may or may not be connected.
 *
 * RETURNS
 *  TRUE if pUnk is not a proxy or if pUnk is connected to a remote stub, or
 *  FALSE otherwise.
 */
BOOL WINAPI CoIsHandlerConnected(IUnknown *pUnk)
{
    FIXME("%p\n", pUnk);

    return TRUE;
}

/***********************************************************************
 *           CoAllowSetForegroundWindow [OLE32.@]
 *
 */
HRESULT WINAPI CoAllowSetForegroundWindow(IUnknown *pUnk, void *pvReserved)
{
    FIXME("(%p, %p): stub\n", pUnk, pvReserved);
    return S_OK;
}
 
/***********************************************************************
 *           CoQueryProxyBlanket [OLE32.@]
 *
 * Retrieves the security settings being used by a proxy.
 *
 * PARAMS
 *  pProxy        [I] Pointer to the proxy object.
 *  pAuthnSvc     [O] The type of authentication service.
 *  pAuthzSvc     [O] The type of authorization service.
 *  ppServerPrincName [O] Optional. The server prinicple name.
 *  pAuthnLevel   [O] The authentication level.
 *  pImpLevel     [O] The impersonation level.
 *  ppAuthInfo    [O] Information specific to the authorization/authentication service.
 *  pCapabilities [O] Flags affecting the security behaviour.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoCopyProxy, CoSetProxyBlanket.
 */
HRESULT WINAPI CoQueryProxyBlanket(IUnknown *pProxy, DWORD *pAuthnSvc,
    DWORD *pAuthzSvc, OLECHAR **ppServerPrincName, DWORD *pAuthnLevel,
    DWORD *pImpLevel, void **ppAuthInfo, DWORD *pCapabilities)
{
    IClientSecurity *pCliSec;
    HRESULT hr;

    TRACE("%p\n", pProxy);

    hr = IUnknown_QueryInterface(pProxy, &IID_IClientSecurity, (void **)&pCliSec);
    if (SUCCEEDED(hr))
    {
        hr = IClientSecurity_QueryBlanket(pCliSec, pProxy, pAuthnSvc,
                                          pAuthzSvc, ppServerPrincName,
                                          pAuthnLevel, pImpLevel, ppAuthInfo,
                                          pCapabilities);
        IClientSecurity_Release(pCliSec);
    }

    if (FAILED(hr)) ERR("-- failed with 0x%08x\n", hr);
    return hr;
}

/***********************************************************************
 *           CoSetProxyBlanket [OLE32.@]
 *
 * Sets the security settings for a proxy.
 *
 * PARAMS
 *  pProxy       [I] Pointer to the proxy object.
 *  AuthnSvc     [I] The type of authentication service.
 *  AuthzSvc     [I] The type of authorization service.
 *  pServerPrincName [I] The server prinicple name.
 *  AuthnLevel   [I] The authentication level.
 *  ImpLevel     [I] The impersonation level.
 *  pAuthInfo    [I] Information specific to the authorization/authentication service.
 *  Capabilities [I] Flags affecting the security behaviour.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoQueryProxyBlanket, CoCopyProxy.
 */
HRESULT WINAPI CoSetProxyBlanket(IUnknown *pProxy, DWORD AuthnSvc,
    DWORD AuthzSvc, OLECHAR *pServerPrincName, DWORD AuthnLevel,
    DWORD ImpLevel, void *pAuthInfo, DWORD Capabilities)
{
    IClientSecurity *pCliSec;
    HRESULT hr;

    TRACE("%p\n", pProxy);

    hr = IUnknown_QueryInterface(pProxy, &IID_IClientSecurity, (void **)&pCliSec);
    if (SUCCEEDED(hr))
    {
        hr = IClientSecurity_SetBlanket(pCliSec, pProxy, AuthnSvc,
                                        AuthzSvc, pServerPrincName,
                                        AuthnLevel, ImpLevel, pAuthInfo,
                                        Capabilities);
        IClientSecurity_Release(pCliSec);
    }

    if (FAILED(hr)) ERR("-- failed with 0x%08x\n", hr);
    return hr;
}

/***********************************************************************
 *           CoCopyProxy [OLE32.@]
 *
 * Copies a proxy.
 *
 * PARAMS
 *  pProxy [I] Pointer to the proxy object.
 *  ppCopy [O] Copy of the proxy.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoQueryProxyBlanket, CoSetProxyBlanket.
 */
HRESULT WINAPI CoCopyProxy(IUnknown *pProxy, IUnknown **ppCopy)
{
    IClientSecurity *pCliSec;
    HRESULT hr;

    TRACE("%p\n", pProxy);

    hr = IUnknown_QueryInterface(pProxy, &IID_IClientSecurity, (void **)&pCliSec);
    if (SUCCEEDED(hr))
    {
        hr = IClientSecurity_CopyProxy(pCliSec, pProxy, ppCopy);
        IClientSecurity_Release(pCliSec);
    }

    if (FAILED(hr)) ERR("-- failed with 0x%08x\n", hr);
    return hr;
}


/***********************************************************************
 *           CoGetCallContext [OLE32.@]
 *
 * Gets the context of the currently executing server call in the current
 * thread.
 *
 * PARAMS
 *  riid [I] Context interface to return.
 *  ppv  [O] Pointer to memory that will receive the context on return.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoGetCallContext(REFIID riid, void **ppv)
{
    struct oletls *info = COM_CurrentInfo();

    TRACE("(%s, %p)\n", debugstr_guid(riid), ppv);

    if (!info)
        return E_OUTOFMEMORY;

    if (!info->call_state)
        return RPC_E_CALL_COMPLETE;

    return IUnknown_QueryInterface(info->call_state, riid, ppv);
}

/***********************************************************************
 *           CoSwitchCallContext [OLE32.@]
 *
 * Switches the context of the currently executing server call in the current
 * thread.
 *
 * PARAMS
 *  pObject     [I] Pointer to new context object
 *  ppOldObject [O] Pointer to memory that will receive old context object pointer
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoSwitchCallContext(IUnknown *pObject, IUnknown **ppOldObject)
{
    struct oletls *info = COM_CurrentInfo();

    TRACE("(%p, %p)\n", pObject, ppOldObject);

    if (!info)
        return E_OUTOFMEMORY;

    *ppOldObject = info->call_state;
    info->call_state = pObject; /* CoSwitchCallContext does not addref nor release objects */

    return S_OK;
}

/***********************************************************************
 *           CoQueryClientBlanket [OLE32.@]
 *
 * Retrieves the authentication information about the client of the currently
 * executing server call in the current thread.
 *
 * PARAMS
 *  pAuthnSvc     [O] Optional. The type of authentication service.
 *  pAuthzSvc     [O] Optional. The type of authorization service.
 *  pServerPrincName [O] Optional. The server prinicple name.
 *  pAuthnLevel   [O] Optional. The authentication level.
 *  pImpLevel     [O] Optional. The impersonation level.
 *  pPrivs        [O] Optional. Information about the privileges of the client.
 *  pCapabilities [IO] Optional. Flags affecting the security behaviour.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoImpersonateClient, CoRevertToSelf, CoGetCallContext.
 */
HRESULT WINAPI CoQueryClientBlanket(
    DWORD *pAuthnSvc,
    DWORD *pAuthzSvc,
    OLECHAR **pServerPrincName,
    DWORD *pAuthnLevel,
    DWORD *pImpLevel,
    RPC_AUTHZ_HANDLE *pPrivs,
    DWORD *pCapabilities)
{
    IServerSecurity *pSrvSec;
    HRESULT hr;

    TRACE("(%p, %p, %p, %p, %p, %p, %p)\n",
        pAuthnSvc, pAuthzSvc, pServerPrincName, pAuthnLevel, pImpLevel,
        pPrivs, pCapabilities);

    hr = CoGetCallContext(&IID_IServerSecurity, (void **)&pSrvSec);
    if (SUCCEEDED(hr))
    {
        hr = IServerSecurity_QueryBlanket(
            pSrvSec, pAuthnSvc, pAuthzSvc, pServerPrincName, pAuthnLevel,
            pImpLevel, pPrivs, pCapabilities);
        IServerSecurity_Release(pSrvSec);
    }

    return hr;
}

/***********************************************************************
 *           CoImpersonateClient [OLE32.@]
 *
 * Impersonates the client of the currently executing server call in the
 * current thread.
 *
 * PARAMS
 *  None.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * NOTES
 *  If this function fails then the current thread will not be impersonating
 *  the client and all actions will take place on behalf of the server.
 *  Therefore, it is important to check the return value from this function.
 *
 * SEE ALSO
 *  CoRevertToSelf, CoQueryClientBlanket, CoGetCallContext.
 */
HRESULT WINAPI CoImpersonateClient(void)
{
    IServerSecurity *pSrvSec;
    HRESULT hr;

    TRACE("\n");

    hr = CoGetCallContext(&IID_IServerSecurity, (void **)&pSrvSec);
    if (SUCCEEDED(hr))
    {
        hr = IServerSecurity_ImpersonateClient(pSrvSec);
        IServerSecurity_Release(pSrvSec);
    }

    return hr;
}

/***********************************************************************
 *           CoRevertToSelf [OLE32.@]
 *
 * Ends the impersonation of the client of the currently executing server
 * call in the current thread.
 *
 * PARAMS
 *  None.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  CoImpersonateClient, CoQueryClientBlanket, CoGetCallContext.
 */
HRESULT WINAPI CoRevertToSelf(void)
{
    IServerSecurity *pSrvSec;
    HRESULT hr;

    TRACE("\n");

    hr = CoGetCallContext(&IID_IServerSecurity, (void **)&pSrvSec);
    if (SUCCEEDED(hr))
    {
        hr = IServerSecurity_RevertToSelf(pSrvSec);
        IServerSecurity_Release(pSrvSec);
    }

    return hr;
}

static BOOL COM_PeekMessage(struct apartment *apt, MSG *msg)
{
    /* first try to retrieve messages for incoming COM calls to the apartment window */
    return (apt->win && PeekMessageW(msg, apt->win, 0, 0, PM_REMOVE|PM_NOYIELD)) ||
           /* next retrieve other messages necessary for the app to remain responsive */
           PeekMessageW(msg, NULL, WM_DDE_FIRST, WM_DDE_LAST, PM_REMOVE|PM_NOYIELD) ||
           PeekMessageW(msg, NULL, 0, 0, PM_QS_PAINT|PM_QS_SENDMESSAGE|PM_REMOVE|PM_NOYIELD);
}

/***********************************************************************
 *           CoWaitForMultipleHandles [OLE32.@]
 *
 * Waits for one or more handles to become signaled.
 *
 * PARAMS
 *  dwFlags   [I] Flags. See notes.
 *  dwTimeout [I] Timeout in milliseconds.
 *  cHandles  [I] Number of handles pointed to by pHandles.
 *  pHandles  [I] Handles to wait for.
 *  lpdwindex [O] Index of handle that was signaled.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: RPC_S_CALLPENDING on timeout.
 *
 * NOTES
 *
 * The dwFlags parameter can be zero or more of the following:
 *| COWAIT_WAITALL - Wait for all of the handles to become signaled.
 *| COWAIT_ALERTABLE - Allows a queued APC to run during the wait.
 *
 * SEE ALSO
 *  MsgWaitForMultipleObjects, WaitForMultipleObjects.
 */
HRESULT WINAPI CoWaitForMultipleHandles(DWORD dwFlags, DWORD dwTimeout,
    ULONG cHandles, LPHANDLE pHandles, LPDWORD lpdwindex)
{
    HRESULT hr = S_OK;
    DWORD start_time = GetTickCount();
    APARTMENT *apt = COM_CurrentApt();
    BOOL message_loop = apt && !apt->multi_threaded;
    BOOL check_apc = (dwFlags & COWAIT_ALERTABLE) != 0;

    TRACE("(0x%08x, 0x%08x, %d, %p, %p)\n", dwFlags, dwTimeout, cHandles,
        pHandles, lpdwindex);

    if (!lpdwindex)
        return E_INVALIDARG;

    *lpdwindex = 0;

    if (!pHandles)
        return E_INVALIDARG;

    if (!cHandles)
        return RPC_E_NO_SYNC;

    while (TRUE)
    {
        DWORD now = GetTickCount();
        DWORD res;

        if (now - start_time > dwTimeout)
        {
            hr = RPC_S_CALLPENDING;
            break;
        }

        if (message_loop)
        {
            DWORD wait_flags = ((dwFlags & COWAIT_WAITALL) ? MWMO_WAITALL : 0) |
                    ((dwFlags & COWAIT_ALERTABLE ) ? MWMO_ALERTABLE : 0);

            TRACE("waiting for rpc completion or window message\n");

            res = WAIT_TIMEOUT;

            if (check_apc)
            {
                res = WaitForMultipleObjectsEx(cHandles, pHandles,
                    (dwFlags & COWAIT_WAITALL) != 0, 0, TRUE);
                check_apc = FALSE;
            }

            if (res == WAIT_TIMEOUT)
                res = MsgWaitForMultipleObjectsEx(cHandles, pHandles,
                    (dwTimeout == INFINITE) ? INFINITE : start_time + dwTimeout - now,
                    QS_SENDMESSAGE | QS_ALLPOSTMESSAGE | QS_PAINT, wait_flags);

            if (res == WAIT_OBJECT_0 + cHandles)  /* messages available */
            {
                MSG msg;
                int count = 0;

                /* call message filter */

                if (COM_CurrentApt()->filter)
                {
                    PENDINGTYPE pendingtype =
                        COM_CurrentInfo()->pending_call_count_server ?
                            PENDINGTYPE_NESTED : PENDINGTYPE_TOPLEVEL;
                    DWORD be_handled = IMessageFilter_MessagePending(
                        COM_CurrentApt()->filter, 0 /* FIXME */,
                        now - start_time, pendingtype);
                    TRACE("IMessageFilter_MessagePending returned %d\n", be_handled);
                    switch (be_handled)
                    {
                    case PENDINGMSG_CANCELCALL:
                        WARN("call canceled\n");
                        hr = RPC_E_CALL_CANCELED;
                        break;
                    case PENDINGMSG_WAITNOPROCESS:
                    case PENDINGMSG_WAITDEFPROCESS:
                    default:
                        /* FIXME: MSDN is very vague about the difference
                         * between WAITNOPROCESS and WAITDEFPROCESS - there
                         * appears to be none, so it is possibly a left-over
                         * from the 16-bit world. */
                        break;
                    }
                }

                /* some apps (e.g. Visio 2010) don't handle WM_PAINT properly and loop forever,
                 * so after processing 100 messages we go back to checking the wait handles */
                while (count++ < 100 && COM_PeekMessage(apt, &msg))
                {
                    TRACE("received message whilst waiting for RPC: 0x%04x\n", msg.message);
                    TranslateMessage(&msg);
                    DispatchMessageW(&msg);
                    if (msg.message == WM_QUIT)
                    {
                        TRACE("resending WM_QUIT to outer message loop\n");
                        PostQuitMessage(msg.wParam);
                        /* no longer need to process messages */
                        message_loop = FALSE;
                        break;
                    }
                }
                continue;
            }
        }
        else
        {
            TRACE("waiting for rpc completion\n");

            res = WaitForMultipleObjectsEx(cHandles, pHandles, (dwFlags & COWAIT_WAITALL) != 0,
                (dwTimeout == INFINITE) ? INFINITE : start_time + dwTimeout - now,
                (dwFlags & COWAIT_ALERTABLE) != 0);
        }

        switch (res)
        {
        case WAIT_TIMEOUT:
            hr = RPC_S_CALLPENDING;
            break;
        case WAIT_FAILED:
            hr = HRESULT_FROM_WIN32( GetLastError() );
            break;
        default:
            *lpdwindex = res;
            break;
        }
        break;
    }
    TRACE("-- 0x%08x\n", hr);
    return hr;
}


/***********************************************************************
 *           CoGetObject [OLE32.@]
 *
 * Gets the object named by converting the name to a moniker and binding to it.
 *
 * PARAMS
 *  pszName      [I] String representing the object.
 *  pBindOptions [I] Parameters affecting the binding to the named object.
 *  riid         [I] Interface to bind to on the objecct.
 *  ppv          [O] On output, the interface riid of the object represented
 *                   by pszName.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 *
 * SEE ALSO
 *  MkParseDisplayName.
 */
HRESULT WINAPI CoGetObject(LPCWSTR pszName, BIND_OPTS *pBindOptions,
    REFIID riid, void **ppv)
{
    IBindCtx *pbc;
    HRESULT hr;

    *ppv = NULL;

    hr = CreateBindCtx(0, &pbc);
    if (SUCCEEDED(hr))
    {
        if (pBindOptions)
            hr = IBindCtx_SetBindOptions(pbc, pBindOptions);

        if (SUCCEEDED(hr))
        {
            ULONG chEaten;
            IMoniker *pmk;

            hr = MkParseDisplayName(pbc, pszName, &chEaten, &pmk);
            if (SUCCEEDED(hr))
            {
                hr = IMoniker_BindToObject(pmk, pbc, NULL, riid, ppv);
                IMoniker_Release(pmk);
            }
        }

        IBindCtx_Release(pbc);
    }
    return hr;
}

/***********************************************************************
 *           CoRegisterChannelHook [OLE32.@]
 *
 * Registers a process-wide hook that is called during ORPC calls.
 *
 * PARAMS
 *  guidExtension [I] GUID of the channel hook to register.
 *  pChannelHook  [I] Channel hook object to register.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoRegisterChannelHook(REFGUID guidExtension, IChannelHook *pChannelHook)
{
    TRACE("(%s, %p)\n", debugstr_guid(guidExtension), pChannelHook);

    return RPC_RegisterChannelHook(guidExtension, pChannelHook);
}

typedef struct Context
{
    IComThreadingInfo IComThreadingInfo_iface;
    IContextCallback IContextCallback_iface;
    IObjContext IObjContext_iface;
    LONG refs;
} Context;

static inline Context *impl_from_IComThreadingInfo( IComThreadingInfo *iface )
{
        return CONTAINING_RECORD(iface, Context, IComThreadingInfo_iface);
}

static inline Context *impl_from_IContextCallback( IContextCallback *iface )
{
        return CONTAINING_RECORD(iface, Context, IContextCallback_iface);
}

static inline Context *impl_from_IObjContext( IObjContext *iface )
{
        return CONTAINING_RECORD(iface, Context, IObjContext_iface);
}

static HRESULT Context_QueryInterface(Context *iface, REFIID riid, LPVOID *ppv)
{
    *ppv = NULL;

    if (IsEqualIID(riid, &IID_IComThreadingInfo) ||
        IsEqualIID(riid, &IID_IUnknown))
    {
        *ppv = &iface->IComThreadingInfo_iface;
    }
    else if (IsEqualIID(riid, &IID_IContextCallback))
    {
        *ppv = &iface->IContextCallback_iface;
    }
    else if (IsEqualIID(riid, &IID_IObjContext))
    {
        *ppv = &iface->IObjContext_iface;
    }

    if (*ppv)
    {
        IUnknown_AddRef((IUnknown*)*ppv);
        return S_OK;
    }

    FIXME("interface not implemented %s\n", debugstr_guid(riid));
    return E_NOINTERFACE;
}

static ULONG Context_AddRef(Context *This)
{
    return InterlockedIncrement(&This->refs);
}

static ULONG Context_Release(Context *This)
{
    /* Context instance is initially created with CoGetContextToken() with refcount set to 0,
       releasing context while refcount is at 0 destroys it. */
    if (!This->refs)
    {
        HeapFree(GetProcessHeap(), 0, This);
        return 0;
    }

    return InterlockedDecrement(&This->refs);
}

static HRESULT WINAPI Context_CTI_QueryInterface(IComThreadingInfo *iface, REFIID riid, LPVOID *ppv)
{
    Context *This = impl_from_IComThreadingInfo(iface);
    return Context_QueryInterface(This, riid, ppv);
}

static ULONG WINAPI Context_CTI_AddRef(IComThreadingInfo *iface)
{
    Context *This = impl_from_IComThreadingInfo(iface);
    return Context_AddRef(This);
}

static ULONG WINAPI Context_CTI_Release(IComThreadingInfo *iface)
{
    Context *This = impl_from_IComThreadingInfo(iface);
    return Context_Release(This);
}

static HRESULT WINAPI Context_CTI_GetCurrentApartmentType(IComThreadingInfo *iface, APTTYPE *apttype)
{
    APTTYPEQUALIFIER qualifier;

    TRACE("(%p)\n", apttype);

    return CoGetApartmentType(apttype, &qualifier);
}

static HRESULT WINAPI Context_CTI_GetCurrentThreadType(IComThreadingInfo *iface, THDTYPE *thdtype)
{
    APTTYPEQUALIFIER qualifier;
    APTTYPE apttype;
    HRESULT hr;

    hr = CoGetApartmentType(&apttype, &qualifier);
    if (FAILED(hr))
        return hr;

    TRACE("(%p)\n", thdtype);

    switch (apttype)
    {
    case APTTYPE_STA:
    case APTTYPE_MAINSTA:
        *thdtype = THDTYPE_PROCESSMESSAGES;
        break;
    default:
        *thdtype = THDTYPE_BLOCKMESSAGES;
        break;
    }
    return S_OK;
}

static HRESULT WINAPI Context_CTI_GetCurrentLogicalThreadId(IComThreadingInfo *iface, GUID *logical_thread_id)
{
    TRACE("(%p)\n", logical_thread_id);
    return CoGetCurrentLogicalThreadId(logical_thread_id);
}

static HRESULT WINAPI Context_CTI_SetCurrentLogicalThreadId(IComThreadingInfo *iface, REFGUID logical_thread_id)
{
    FIXME("(%s): stub\n", debugstr_guid(logical_thread_id));
    return E_NOTIMPL;
}

static const IComThreadingInfoVtbl Context_Threading_Vtbl =
{
    Context_CTI_QueryInterface,
    Context_CTI_AddRef,
    Context_CTI_Release,
    Context_CTI_GetCurrentApartmentType,
    Context_CTI_GetCurrentThreadType,
    Context_CTI_GetCurrentLogicalThreadId,
    Context_CTI_SetCurrentLogicalThreadId
};

static HRESULT WINAPI Context_CC_QueryInterface(IContextCallback *iface, REFIID riid, LPVOID *ppv)
{
    Context *This = impl_from_IContextCallback(iface);
    return Context_QueryInterface(This, riid, ppv);
}

static ULONG WINAPI Context_CC_AddRef(IContextCallback *iface)
{
    Context *This = impl_from_IContextCallback(iface);
    return Context_AddRef(This);
}

static ULONG WINAPI Context_CC_Release(IContextCallback *iface)
{
    Context *This = impl_from_IContextCallback(iface);
    return Context_Release(This);
}

static HRESULT WINAPI Context_CC_ContextCallback(IContextCallback *iface, PFNCONTEXTCALL pCallback,
                            ComCallData *param, REFIID riid, int method, IUnknown *punk)
{
    Context *This = impl_from_IContextCallback(iface);

    FIXME("(%p/%p)->(%p, %p, %s, %d, %p)\n", This, iface, pCallback, param, debugstr_guid(riid), method, punk);
    return E_NOTIMPL;
}

static const IContextCallbackVtbl Context_Callback_Vtbl =
{
    Context_CC_QueryInterface,
    Context_CC_AddRef,
    Context_CC_Release,
    Context_CC_ContextCallback
};

static HRESULT WINAPI Context_OC_QueryInterface(IObjContext *iface, REFIID riid, LPVOID *ppv)
{
    Context *This = impl_from_IObjContext(iface);
    return Context_QueryInterface(This, riid, ppv);
}

static ULONG WINAPI Context_OC_AddRef(IObjContext *iface)
{
    Context *This = impl_from_IObjContext(iface);
    return Context_AddRef(This);
}

static ULONG WINAPI Context_OC_Release(IObjContext *iface)
{
    Context *This = impl_from_IObjContext(iface);
    return Context_Release(This);
}

static HRESULT WINAPI Context_OC_SetProperty(IObjContext *iface, REFGUID propid, CPFLAGS flags, IUnknown *punk)
{
    Context *This = impl_from_IObjContext(iface);

    FIXME("(%p/%p)->(%s, %x, %p)\n", This, iface, debugstr_guid(propid), flags, punk);
    return E_NOTIMPL;
}

static HRESULT WINAPI Context_OC_RemoveProperty(IObjContext *iface, REFGUID propid)
{
    Context *This = impl_from_IObjContext(iface);

    FIXME("(%p/%p)->(%s)\n", This, iface, debugstr_guid(propid));
    return E_NOTIMPL;
}

static HRESULT WINAPI Context_OC_GetProperty(IObjContext *iface, REFGUID propid, CPFLAGS *flags, IUnknown **punk)
{
    Context *This = impl_from_IObjContext(iface);

    FIXME("(%p/%p)->(%s, %p, %p)\n", This, iface, debugstr_guid(propid), flags, punk);
    return E_NOTIMPL;
}

static HRESULT WINAPI Context_OC_EnumContextProps(IObjContext *iface, IEnumContextProps **props)
{
    Context *This = impl_from_IObjContext(iface);

    FIXME("(%p/%p)->(%p)\n", This, iface, props);
    return E_NOTIMPL;
}

static void WINAPI Context_OC_Reserved1(IObjContext *iface)
{
    Context *This = impl_from_IObjContext(iface);
    FIXME("(%p/%p)\n", This, iface);
}

static void WINAPI Context_OC_Reserved2(IObjContext *iface)
{
    Context *This = impl_from_IObjContext(iface);
    FIXME("(%p/%p)\n", This, iface);
}

static void WINAPI Context_OC_Reserved3(IObjContext *iface)
{
    Context *This = impl_from_IObjContext(iface);
    FIXME("(%p/%p)\n", This, iface);
}

static void WINAPI Context_OC_Reserved4(IObjContext *iface)
{
    Context *This = impl_from_IObjContext(iface);
    FIXME("(%p/%p)\n", This, iface);
}

static void WINAPI Context_OC_Reserved5(IObjContext *iface)
{
    Context *This = impl_from_IObjContext(iface);
    FIXME("(%p/%p)\n", This, iface);
}

static void WINAPI Context_OC_Reserved6(IObjContext *iface)
{
    Context *This = impl_from_IObjContext(iface);
    FIXME("(%p/%p)\n", This, iface);
}

static void WINAPI Context_OC_Reserved7(IObjContext *iface)
{
    Context *This = impl_from_IObjContext(iface);
    FIXME("(%p/%p)\n", This, iface);
}

static const IObjContextVtbl Context_Object_Vtbl =
{
    Context_OC_QueryInterface,
    Context_OC_AddRef,
    Context_OC_Release,
    Context_OC_SetProperty,
    Context_OC_RemoveProperty,
    Context_OC_GetProperty,
    Context_OC_EnumContextProps,
    Context_OC_Reserved1,
    Context_OC_Reserved2,
    Context_OC_Reserved3,
    Context_OC_Reserved4,
    Context_OC_Reserved5,
    Context_OC_Reserved6,
    Context_OC_Reserved7
};

/***********************************************************************
 *           CoGetObjectContext [OLE32.@]
 *
 * Retrieves an object associated with the current context (i.e. apartment).
 *
 * PARAMS
 *  riid [I] ID of the interface of the object to retrieve.
 *  ppv  [O] Address where object will be stored on return.
 *
 * RETURNS
 *  Success: S_OK.
 *  Failure: HRESULT code.
 */
HRESULT WINAPI CoGetObjectContext(REFIID riid, void **ppv)
{
    IObjContext *context;
    HRESULT hr;

    TRACE("(%s, %p)\n", debugstr_guid(riid), ppv);

    *ppv = NULL;
    hr = CoGetContextToken((ULONG_PTR*)&context);
    if (FAILED(hr))
        return hr;

    return IObjContext_QueryInterface(context, riid, ppv);
}

/***********************************************************************
 *           CoGetContextToken [OLE32.@]
 */
HRESULT WINAPI CoGetContextToken( ULONG_PTR *token )
{
    struct oletls *info = COM_CurrentInfo();

    TRACE("(%p)\n", token);

    if (!info)
        return E_OUTOFMEMORY;

    if (!info->apt)
    {
        APARTMENT *apt;
        if (!(apt = apartment_find_multi_threaded()))
        {
            ERR("apartment not initialised\n");
            return CO_E_NOTINITIALIZED;
        }
        apartment_release(apt);
    }

    if (!token)
        return E_POINTER;

    if (!info->context_token)
    {
        Context *context;

        context = HeapAlloc(GetProcessHeap(), 0, sizeof(*context));
        if (!context)
            return E_OUTOFMEMORY;

        context->IComThreadingInfo_iface.lpVtbl = &Context_Threading_Vtbl;
        context->IContextCallback_iface.lpVtbl = &Context_Callback_Vtbl;
        context->IObjContext_iface.lpVtbl = &Context_Object_Vtbl;
        /* Context token does not take a reference, it's always zero until the
           interface is explicitly requested with CoGetObjectContext(). */
        context->refs = 0;

        info->context_token = &context->IObjContext_iface;
    }

    *token = (ULONG_PTR)info->context_token;
    TRACE("context_token=%p\n", info->context_token);

    return S_OK;
}

/***********************************************************************
 *           CoGetDefaultContext [OLE32.@]
 */
HRESULT WINAPI CoGetDefaultContext(APTTYPE type, REFIID riid, LPVOID *ppv)
{
    FIXME("%d %s %p stub\n", type, debugstr_guid(riid), ppv);
    return E_NOINTERFACE;
}

HRESULT Handler_DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
{
    static const WCHAR wszInprocHandler32[] = {'I','n','p','r','o','c','H','a','n','d','l','e','r','3','2',0};
    HKEY hkey;
    HRESULT hres;

    hres = COM_OpenKeyForCLSID(rclsid, wszInprocHandler32, KEY_READ, &hkey);
    if (SUCCEEDED(hres))
    {
        struct class_reg_data regdata;
        WCHAR dllpath[MAX_PATH+1];

        regdata.u.hkey = hkey;
        regdata.hkey = TRUE;

        if (COM_RegReadPath(&regdata, dllpath, ARRAYSIZE(dllpath)) == ERROR_SUCCESS)
        {
            static const WCHAR wszOle32[] = {'o','l','e','3','2','.','d','l','l',0};
            if (!strcmpiW(dllpath, wszOle32))
            {
                RegCloseKey(hkey);
                return HandlerCF_Create(rclsid, riid, ppv);
            }
        }
        else
            WARN("not creating object for inproc handler path %s\n", debugstr_w(dllpath));
        RegCloseKey(hkey);
    }

    return CLASS_E_CLASSNOTAVAILABLE;
}

/***********************************************************************
 *           CoGetApartmentType [OLE32.@]
 */
HRESULT WINAPI CoGetApartmentType(APTTYPE *type, APTTYPEQUALIFIER *qualifier)
{
    struct oletls *info = COM_CurrentInfo();

    FIXME("(%p, %p): semi-stub\n", type, qualifier);

    if (!type || !qualifier)
        return E_INVALIDARG;

    if (!info)
        return E_OUTOFMEMORY;

    if (!info->apt)
        *type = APTTYPE_CURRENT;
    else if (info->apt->multi_threaded)
        *type = APTTYPE_MTA;
    else if (info->apt->main)
        *type = APTTYPE_MAINSTA;
    else
        *type = APTTYPE_STA;

    *qualifier = APTTYPEQUALIFIER_NONE;

    return info->apt ? S_OK : CO_E_NOTINITIALIZED;
}

/***********************************************************************
 *           CoRegisterSurrogate [OLE32.@]
 */
HRESULT WINAPI CoRegisterSurrogate(ISurrogate *surrogate)
{
    FIXME("(%p): stub\n", surrogate);

    return E_NOTIMPL;
}

/***********************************************************************
 *           CoRegisterSurrogateEx [OLE32.@]
 */
HRESULT WINAPI CoRegisterSurrogateEx(REFGUID guid, void *reserved)
{
    FIXME("(%s %p): stub\n", debugstr_guid(guid), reserved);

    return E_NOTIMPL;
}

typedef struct {
    IGlobalOptions IGlobalOptions_iface;
    LONG ref;
} GlobalOptions;

static inline GlobalOptions *impl_from_IGlobalOptions(IGlobalOptions *iface)
{
    return CONTAINING_RECORD(iface, GlobalOptions, IGlobalOptions_iface);
}

static HRESULT WINAPI GlobalOptions_QueryInterface(IGlobalOptions *iface, REFIID riid, void **ppv)
{
    GlobalOptions *This = impl_from_IGlobalOptions(iface);

    TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);

    if (IsEqualGUID(&IID_IGlobalOptions, riid) || IsEqualGUID(&IID_IUnknown, riid))
    {
        *ppv = iface;
    }
    else
    {
        *ppv = NULL;
        return E_NOINTERFACE;
    }

    IUnknown_AddRef((IUnknown*)*ppv);
    return S_OK;
}

static ULONG WINAPI GlobalOptions_AddRef(IGlobalOptions *iface)
{
    GlobalOptions *This = impl_from_IGlobalOptions(iface);
    LONG ref = InterlockedIncrement(&This->ref);

    TRACE("(%p) ref=%d\n", This, ref);

    return ref;
}

static ULONG WINAPI GlobalOptions_Release(IGlobalOptions *iface)
{
    GlobalOptions *This = impl_from_IGlobalOptions(iface);
    LONG ref = InterlockedDecrement(&This->ref);

    TRACE("(%p) ref=%d\n", This, ref);

    if (!ref)
        heap_free(This);

    return ref;
}

static HRESULT WINAPI GlobalOptions_Set(IGlobalOptions *iface, GLOBALOPT_PROPERTIES property, ULONG_PTR value)
{
    GlobalOptions *This = impl_from_IGlobalOptions(iface);
    FIXME("(%p)->(%u %lx)\n", This, property, value);
    return S_OK;
}

static HRESULT WINAPI GlobalOptions_Query(IGlobalOptions *iface, GLOBALOPT_PROPERTIES property, ULONG_PTR *value)
{
    GlobalOptions *This = impl_from_IGlobalOptions(iface);
    FIXME("(%p)->(%u %p)\n", This, property, value);
    return E_NOTIMPL;
}

static const IGlobalOptionsVtbl GlobalOptionsVtbl = {
    GlobalOptions_QueryInterface,
    GlobalOptions_AddRef,
    GlobalOptions_Release,
    GlobalOptions_Set,
    GlobalOptions_Query
};

HRESULT WINAPI GlobalOptions_CreateInstance(IClassFactory *iface, IUnknown *outer, REFIID riid, void **ppv)
{
    GlobalOptions *global_options;
    HRESULT hres;

    TRACE("(%p %s %p)\n", outer, debugstr_guid(riid), ppv);

    if (outer)
        return E_INVALIDARG;

    global_options = heap_alloc(sizeof(*global_options));
    if (!global_options)
        return E_OUTOFMEMORY;
    global_options->IGlobalOptions_iface.lpVtbl = &GlobalOptionsVtbl;
    global_options->ref = 1;

    hres = IGlobalOptions_QueryInterface(&global_options->IGlobalOptions_iface, riid, ppv);
    IGlobalOptions_Release(&global_options->IGlobalOptions_iface);
    return hres;
}

/***********************************************************************
 *              DllMain (OLE32.@)
 */
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID reserved)
{
    TRACE("%p 0x%x %p\n", hinstDLL, fdwReason, reserved);

    switch(fdwReason) {
    case DLL_PROCESS_ATTACH:
        hProxyDll = hinstDLL;
        break;

    case DLL_PROCESS_DETACH:
        if (reserved) break;
        release_std_git();
        UnregisterClassW( wszAptWinClass, hProxyDll );
        RPC_UnregisterAllChannelHooks();
        COMPOBJ_DllList_Free();
        DeleteCriticalSection(&csRegisteredClassList);
        DeleteCriticalSection(&csApartment);
        break;

    case DLL_THREAD_DETACH:
        COM_TlsDestroy();
        break;
    }
    return TRUE;
}

/***********************************************************************
 *              DllRegisterServer (OLE32.@)
 */
HRESULT WINAPI DllRegisterServer(void)
{
    return OLE32_DllRegisterServer();
}

/***********************************************************************
 *              DllUnregisterServer (OLE32.@)
 */
HRESULT WINAPI DllUnregisterServer(void)
{
    return OLE32_DllUnregisterServer();
}